DR
5 min read
Slack vs Microsoft Teams: Complete Comparison (2026) | Comparison
VS
Microsoft Teams
Unified communications platform integrated with Microsoft 365, combining chat, calls, and meetings.
Enterprise teams using Microsoft 365
Score57%
320 attributes5 differences14 pros/cons
Quick Answer
AI SummarySlack is the pioneer of team messaging with a cleaner interface and better third-party integrations. Microsoft Teams has 320M+ daily active users — largely due to Office 365 bundling — and better video conferencing. Teams is free with Microsoft 365; Slack charges for most features.
Read full verdictSlack for startups and developers who value integrations and UX. Teams for enterprises already using Microsoft 365. Teams wins on scale; Slack wins on experience.
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Key Differences at a Glance
- Daily Active Users:✓ Microsoft Teams wins(320M+ vs ~38M)
- Interface Quality:✓ Slack wins(Excellent vs Moderate)
- Video Calling:✓ Microsoft Teams wins(Excellent vs Good)
Key Facts & Figures
209 numeric metrics compared
| Metric | Slack | Microsoft Teams | Ratio |
|---|---|---|---|
| App Integrations(count) | 2,600+ | ~700 | |
| Paid Starting Price(USD/user/mo) | $7.25 | Included with M365 | |
| Standalone Monthly Pricing (Pro Tier)(USD per user per month) | $7.25 | $6.00 (with Microsoft 365 Business Basic) | |
| Annual Cost per User (Pro Tier)(USD) | $87 (billed yearly) | $72 (bundled pricing) | |
| Third-Party App Integrations(count) | 2,400+ | 1,000+ | |
| Video Meeting Capacity(participants) | Up to 2,000 (with paid plan) | Up to 10,000 | |
| Mobile App Feature Parity | 95% | 85% | |
| Monthly Cost per 20-Person Team(USD) | $3,600 (Pro plan at $15/user) | — | — |
| Global Market Share(%) | 65% | — | — |
| Free Trial Duration(uses) | 7 days | — | — |
| Message History Retention on Free Plan(count) | 10,000 most recent | — | — |
| Base Monthly Cost Per User(USD) | $8.25 (Pro plan, min 3 users) | $6-12 | |
| Free Tier Meeting Participant Limit(participants) | Unlimited (Slack Huddles for video limited to 50 participants) | — | — |
| Asynchronous Communication Strength(scale 1-5) | 5 out of 5 (core feature with channels, threads, and history) | — | — |
| Google Workspace Integration Level | 2 out of 5 (available via integration, not native) | — | — |
| AI Features Count (2026)(features) | 30+ (CRM tools, meeting summaries, automation, SlackBot enhancements) | — | — |
| Base Monthly Cost Per User(USD) | $7.25 | — | — |
| Business+ Tier Monthly Cost Per User(USD) | $12.50 | — | — |
| Available Integrations(integrations) | 2000+ | — | — |
| Price Stability (2024-2026)(months) | No increases for 33 months | — | — |
| Free Tier Cost(USD) | Free | — | — |
| Pro/Standard Monthly Cost(USD per user/month) | $7.25 | — | — |
| Third-party Integrations(integrations) | 2000+ | — | — |
| Minimum Monthly Cost Per User(USD) | $7.25 | — | — |
| Third-Party Integrations Available(count) | 2,000+ | — | — |
| Years Price Stable (2026)(months) | 33+ months | — | — |
| Native Integrations Available(integrations) | 2200+ | 1000+ | |
| Pro Plan Annual Cost(USD) | $150 (billed monthly) | $70/year (via Microsoft 365 Business Basic) | |
| Free Tier Message History Retention(days) | 90 days | — | — |
| AI Transcription Languages Supported(languages) | 0 (not native feature) | — | — |
| Enterprise Uptime SLA(%) | 99.99% | — | — |
| User Workspace Limit (Free Tier)(workspaces) | 1 workspace | — | — |
| Maximum Meeting Participants (Free)(participants) | 3 participants | — | — |
| Pro Plan Monthly Cost (Annual Billing)(USD per user) | $8.75 | — | — |
| Monthly Cost (Pro Plan)(USD) | $12.50 per user/month | $15 (Essentials) / $20 (Standard) | |
| Free Message History(days) | 90 days maximum | — | — |
| Voice Audio Codec Quality(kHz) | 16 kHz | — | — |
| Third-Party Integrations(apps) | 2,200+ apps | 500+ | |
| Maximum Video Call Participants(people) | 15 participants | — | — |
| Total Registered Users(millions) | 750 million | — | — |
| Enterprise Plan Monthly Cost Per User(USD) | $12.50 | — | — |
| Free Plan Message History Retention(days) | 90 days | — | — |
| Paid Plan Starting Price(USD/month) | $7.25 | $6 | |
| Cloud Storage (Base Plan)(GB) | 10 GB | — | — |
| Monthly Cost Per User(USD) | $8-12.50 (Pro/Business+) | — | — |
| Active Workspaces(workspaces) | 750,000+ | — | — |
| Message History Searchable(years) | 10 years standard | — | — |
| Workflow Automation Steps(built-in steps) | 50+ | — | — |
| Native App Integrations Available(count) | 2,400+ apps | — | — |
| Monthly Cost (Pro Plan, 50 users)(USD) | $412.50/month | — | — |
| Paid Workspaces/Users (Enterprise Adoption)(workspaces) | 750,000+ paid workspaces | — | — |
| Monthly Cost (10 Users, Annual)(USD) | $150/month ($1,800/year) | — | — |
| Pre-Built Integrations(count) | 2,400+ integrations | — | — |
| Message History on Free Plan(days) | 90-day limited access | — | — |
| Active Global Workspaces/Deployments(count) | 750,000+ active workspaces | — | — |
| Uptime SLA Guarantee(percent) | 99.99% | 99.9% | |
| Price Per User Per Month (Pro/Standard)(USD) | $12.50/user (Pro plan) | — | — |
| Base Monthly Cost (10-person team)(USD) | $80-150 | — | — |
| Cost for 50-person team(USD/month) | $400-750 | — | — |
| Real-time Messaging Speed(ms (message delivery latency)) | 50-100ms (instant) | — | — |
| File Storage Included(GB) | 5GB (Free), varies by plan | — | — |
| Setup Time for New Team(days) | 0.5-1 hour | — | — |
| Max Video Conference Participants(people) | 1000 | 10000 | |
| Voice Codec Quality Rating(score (1-10)) | 7.5 | 8 | |
| Time to Deploy(seconds (average)) | 3-7 | 1-3 | |
| Uptime Guarantee(percent) | 99.99% | 99.9% | |
| Pro Plan Monthly Cost(USD) | $8.75 (annual) | $6.99 | |
| Video Conference Max Participants(participants) | 150 | 300 | |
| Free Tier File Storage(GB per user) | 1 GB shared workspace | 100 GB per user | |
| Message Search History (Free Tier)(days) | 90 days | 90 days | |
| Annual Subscription Cost (Pro, 100 users)(USD) | $10,500 | $7,800 or free with Microsoft 365 | |
| Desktop App Memory Usage(MB) | 280 MB | 450 MB | |
| Monthly Subscription Cost (Pro Plan)(USD) | $12.50 | — | — |
| Native Third-Party Integrations(count) | 2,000+ | 500+ apps | |
| Message Search Response Time(seconds) | 2-4 seconds | — | — |
| User interface satisfaction rating(out of 10) | 9.2/10 | — | — |
| Maximum video call participants (free tier)(people) | 100 participants | — | — |
| Service uptime SLA guarantee(percent) | 99.99% | — | — |
| Message history retention (free plan)(days) | 90 days searchable | — | — |
| Enterprise app marketplace size(applications) | 2,000+ apps (Slack App Directory) | — | — |
| Team Size Cost Efficiency Threshold(team members) | Cost-effective until ~12 users | — | — |
| Average User Adoption Time(days) | 1-3 days | — | — |
| Global Active Users(millions) | 750+ million messages daily across 750k+ organizations | — | — |
| Monthly Subscription Cost (Pro/Standard)(USD) | $8.25 | $0 (bundled) or $12.50 (standalone) | |
| Message Delivery Latency(milliseconds) | <100ms | 200-300ms | |
| File Upload Limit(GB) | 20GB | 250GB | |
| G2 Ease of Use Rating (2024)(stars) | 4.5/5 | 4.0/5 | |
| Video Meeting Participant Limit(participants) | 2000 | 300 | |
| Pro Plan Monthly Cost per User(USD) | $12.50 | $6.00 | |
| File Storage Per User(GB) | 100 (workspace) | 1000 (1TB OneDrive) | |
| Free Group Video Call Duration Limit(minutes) | 40 | 60 minutes | |
| Maximum Video Conference Participants (Free)(people) | Limited (typically 3-4) | 100 | |
| G2 User Interface Rating(out of 5) | 4.6/5 (12,400 reviews) | 4.1/5 (8,300 reviews) | |
| Daily Active Users(millions) | 21 million | 320 million | |
| Message History (Free Plan)(days) | 90 days | unlimited | — |
| Cost Per User (Annual, Lowest Paid Tier)(USD/month) | $8/month | — | — |
| Organizations Using Platform(count (thousands)) | 750,000+ | — | — |
| Monthly Cost Per User (Standard Tier, Annual Billing)(USD) | $7.25 | — | — |
| Cloud Storage Included Per User(GB) | 0 GB (integrations only) | — | — |
| Maximum Video Conference Participants (Standard Plan)(participants) | 2 | — | — |
| Third-Party App Integrations Available(apps) | 2,300+ | — | — |
| Message Search History(messages) | 10,000 (free tier); unlimited (paid) | — | — |
| Base Cost Per User/Month(USD) | $8.99 | — | — |
| Native Integrations(count) | 2,000+ | — | — |
| Active Workspaces/Deployments(count) | 750,000 | — | — |
| iOS App Rating(stars out of 5) | 4.7 | — | — |
| Available Integrations(count) | 2,000+ | 1,000+ native integrations | |
| Monthly Cost Per User (Standard)(USD) | $8-15 | — | — |
| Active Organizational Users(organizations) | 750,000+ workspaces | — | — |
| Message History Search (Self-Hosted)(messages) | 10,000 (free), unlimited (paid) | — | — |
| Enterprise Support SLA | 1-4 hours (Enterprise Grid) | — | — |
| File Storage (Free Plan)(GB) | 5GB | — | — |
| Base Monthly Pricing (Annual Billed)(USD per user) | $8 | — | — |
| Active Workspaces (2024)(thousands) | 750,000+ workspaces | — | — |
| Paying Organizations/Enterprise Customers(thousands) | 750 (in thousands = 750,000 paying orgs) | — | — |
| Free Plan App Integrations(apps) | 10 maximum | — | — |
| Pro/Standard Plan Cost per User/Month(USD) | $12.50/user/month | — | — |
| Countries Supported(countries) | 150+ | — | — |
| Languages Supported(languages) | 10+ | — | — |
| Time to Operational Team Setup(hours) | Less than 1 hour | — | — |
| Monthly Cost Per User (Pro Plan)(USD) | $12.50 (Pro plan) | $6.00 (or free with M365) | |
| Message Search Quality Score(1-10 scale) | 9.5 | 6.0 | |
| Max Group Video Call Participants(users) | 3 (free tier) | 10,000 | |
| Enterprise Security Certifications(count) | SOC 2, ISO 27001, GDPR | SOC 2, FedRAMP, ISO 27001, HIPAA | |
| Setup Time for New Teams(minutes) | 15-20 | 30-45 | |
| User Base Size(millions of developers) | 21 million daily active | 280 million monthly active | |
| Voice Call Audio Quality Score(1-10 scale) | 7.5 | 8.0 | |
| Free Plan Video Participants(participants) | 2 participants | — | — |
| Free Plan Meeting Duration Limit(minutes) | 60 minutes | 60 minutes (3+ participants) | |
| Third-Party Integrations Available(integrations) | 2,000+ | 500+ | |
| Starting Monthly Cost Per User(USD) | $6.67 | — | — |
| Maximum Monthly Cost Per User(USD) | $12.50 | — | — |
| Daily Active Users Worldwide(users) | 750,000+ | — | — |
| Message History Searchability | Limited on free plan (10,000 messages); full search on paid | — | — |
| Video Conference Capacity(participants) | 15 | — | — |
| Message History Retention (Free Tier)(days) | 90 days | Unlimited | — |
| Maximum File Storage (Free Tier)(GB) | 5GB shared workspace | — | — |
| Active Daily Users(millions) | 20+ million daily active | — | — |
| Free Trial Length(days) | 14 days full feature access | — | — |
| Maximum Webinar Participants(participants) | 10,000 | 10,000 | |
| Maximum Free Breakout Rooms(rooms) | 50 rooms | 50 rooms | |
| Starting Paid Plan Cost(USD/month) | $6/month (Microsoft 365 bundle) | $6/month (Microsoft 365 bundle) | |
| Free Plan Monthly Cost(USD) | $6 (Teams Essentials) | $6 (Teams Essentials) | |
| Maximum Free Tier Group Meeting Duration(hours) | 24 hours | 24 hours | |
| Free Tier Participant Limit(participants) | 100 participants | 100 participants | |
| Gartner Meeting Solutions Rating(stars) | 4.5 stars | 4.5 stars | |
| Gartner Review Sample Size(reviews) | 3,669 reviews | 3,669 reviews | |
| Gartner Customer Rating(stars) | 4.5 stars | 4.5 stars | |
| Customer Reviews Analyzed(count) | 3,668 reviews | 3,668 reviews | |
| Video Quality Rating(%) | 7.9% positive | 7.9% positive | |
| Starting Monthly Price Per User(USD) | $4.50 | $4.50 | |
| Free Meeting Duration (3+ participants)(minutes) | 60 minutes | 60 minutes | |
| Real-Time Translation Languages(count) | 31 languages | 31 languages | |
| Enterprise Deployment Adoption (500+ seat orgs)(percentage) | 67% of deployments | 67% of deployments | |
| 3-Year TCO Advantage for 1,000 Users with M365(percentage savings) | 47% lower cost | 47% lower cost | |
| Base Pricing (Monthly)(USD) | $7.00 (Business Basic 2026 price) | $7.00 (Business Basic 2026 price) | |
| Maximum Video Meeting Participants(participants) | 300+ participants | 300+ participants | |
| Language Translation Support(languages) | 40+ languages (Teams Premium) | 40+ languages (Teams Premium) | |
| Registered Users Globally(millions) | 350+ million monthly active users | 350+ million monthly active users | |
| Monthly Active Users (MAU)(millions) | 320M | 320M | |
| Minimum Bandwidth for HD Video(Mbps) | 4.5 Mbps | 4.5 Mbps | |
| Monthly Active Users (2024)(millions) | 320 million | 320 million | |
| Starting Price (Monthly)(USD) | $0 (Free) or $6 (Standard) | $0 (Free) or $6 (Standard) | |
| Maximum Video Conference Participants(participants) | 10,000 participants | 10,000 participants | |
| Voice Latency(milliseconds) | 80-120ms | 80-120ms | |
| Free Tier Call Duration Limit(minutes) | 60 minutes (100 participants max) | 60 minutes (100 participants max) | |
| Monthly Cost (1 Pro User)(USD) | $6.00 | $6.00 | |
| Screen Sharing Maximum FPS(fps) | 30fps | 30fps | |
| Supported Language Captions(languages) | 60+ languages | 60+ languages | |
| Maximum Free Server Categories(categories) | Limited (fixed structure) | Limited (fixed structure) | |
| Enterprise Fortune 500 Adoption Rate(percent) | 80% | 80% | |
| Free Tier Meeting Duration for Group Calls(minutes) | 60 minutes (unlimited participants) | 60 minutes (unlimited participants) | |
| Maximum Participants (Standard Meeting)(people) | 300 participants | 300 participants | |
| Free Plan Cloud Storage(GB) | 5 GB (OneDrive) | 5 GB (OneDrive) | |
| Breakout Rooms Maximum Count(rooms) | 50 breakout rooms | 50 breakout rooms | |
| Global Enterprise Video Conferencing Market Share (2024)(percent) | 28.2% | 28.2% | |
| Active Monthly Users(millions) | 300+ million users | 300+ million users | |
| Base Monthly Cost (Single User)(USD) | $4.00 (Teams Essentials) - $12.50 (Teams Premium) | $4.00 (Teams Essentials) - $12.50 (Teams Premium) | |
| Maximum File Upload Size(TB) | 2 GB per file | 2 GB per file | |
| Annual TCO (1,000 users, 3-year average)(USD) | $48,000-150,000 | $48,000-150,000 | |
| Maximum Participants Per Meeting(participants) | 300 standard | 300 standard | |
| Free Tier Monthly Cost(USD) | $0 (limited) | $0 (limited) | |
| Standard Video Resolution(pixels) | 1920x1080 | 1920x1080 | |
| Screen Sharing Participants(simultaneous users) | 1 primary | 1 primary | |
| Meeting Recording Storage (Free)(hours) | Unlimited in OneDrive | Unlimited in OneDrive | |
| Mobile App Quality Rating(stars) | 4.5 | 4.5 | |
| AI Features Integration(count) | 8 (Copilot, live transcription, noise suppression, translation) | 8 (Copilot, live transcription, noise suppression, translation) | |
| Enterprise Support Response Time(hours) | 1 | 1 | |
| Maximum Simultaneous Screen Shares(participants) | 4 participants | 4 participants | |
| Maximum Free Plan Participants(people) | 100 participants | 100 participants | |
| Real-Time Caption Languages Supported(languages) | 60+ languages | 60+ languages | |
| 4K Video Quality Support(fps) | 4K @ 30fps (Premium only) | 4K @ 30fps (Premium only) | |
| Maximum Meeting Participants(participants) | 10,000 | 10,000 | |
| Chat Message Retention (Free Tier)(months) | 36+ months | 36+ months | |
| Setup Time for New Users(hours) | 8-10 (account creation + installation) | 8-10 (account creation + installation) | |
| Third-Party Bot Integrations Available(count) | 1,500+ apps | 1,500+ apps | |
| Base Pricing (Team/Workspace)(USD per month) | $6 per user (Teams Essentials) | $6 per user (Teams Essentials) | |
| Voice Latency (Lower is Better)(milliseconds) | 50-80ms | 50-80ms | |
| Free Tier Monthly Active Users(millions) | 320 million | 320 million | |
| Video Participants (Free Tier)(maximum simultaneous) | 100 video participants | 100 video participants | |
| Workspace/Server Creation Cost(USD per month) | Free Teams ($5-12/month for Pro) | Free Teams ($5-12/month for Pro) | |
| End-to-End Encryption Launch Year(year) | 2021 | 2021 | |
| Cross-Platform Native Support(platforms) | Windows, Mac, iOS, Android | Windows, Mac, iOS, Android | |
| Free Plan Maximum Participants(participants) | 100 | 100 | |
| Free Plan Group Meeting Duration(minutes) | 60 | 60 | |
| Mobile App Store Rating(stars out of 5) | 4.2 (2.4M reviews) | 4.2 (2.4M reviews) | |
| Video Conference Participant Limit(participants) | 300 participants | 300 participants | |
| Third-Party Integrations (Native)(count) | 1000+ via Microsoft AppSource | 1000+ via Microsoft AppSource | |
| Free Trial Period(days) | 30 days (limited features) | 30 days (limited features) |
Sourced from publicly available data ·
Key Differences
5 attributes compared head-to-head
S
2SlackMicrosoft Teams leads
Slack
Attribute
Microsoft Teams
- ~38MDaily Active Users320M+(winner)
- Excellent(winner)Interface QualityModerate
- GoodVideo CallingExcellent(winner)
- $7.25+/user/moPriceIncluded in M365(winner)
- Superior(winner)Developer IntegrationsGood
- Daily Active Users
Slack
~38M
Microsoft Teams
320M+(winner)
- Interface Quality
Slack
Excellent(winner)
Microsoft Teams
Moderate
- Video Calling
Slack
Good
Microsoft Teams
Excellent(winner)
- Price
Slack
$7.25+/user/mo
Microsoft Teams
Included in M365(winner)
- Developer Integrations
Slack
Superior(winner)
Microsoft Teams
Good
Full Comparison
| Attribute | Slack | Microsoft Teams |
|---|---|---|
| App Integrations(count) | 2,600+(winner) | ~700 |
| Third-Party App Integrations(count) | 2,400+(winner) | 1,000+ |
| Video Meeting Capacity(participants) | Up to 2,000 (with paid plan) | Up to 10,000(winner) |
| Native Office Integration | Limited (third-party connectors) | Native with SharePoint, OneDrive, Office Web Apps |
| AI Copilot Features | Slack AI (summarization, search, assisted writing) | Microsoft Copilot Pro (enterprise AI, meeting insights) |
Show 49 more attributesMessage History Retention on Free Plan(count) 10,000 most recent — Free Tier Meeting Participant Limit(participants) Unlimited (Slack Huddles for video limited to 50 participants) — Native Video Conferencing Huddles for brief video, limited to 50 participants; requires external tool for full conferencing — Meeting Recording & Auto-Transcription Not native; requires integration with Otter.ai or similar third-party services — Asynchronous Communication Strength(scale 1-5) 5 out of 5 (core feature with channels, threads, and history) — Third-Party Integrations Available(count) 2,000+ — Enterprise AI Features Advanced AI assistant, smart summaries, automation — Free Plan Message History(days) 90 days — Free Message History(days) 90 days maximum — Free Plan Message History Retention(days) 90 days — Free Plan External Guest Collaboration(capacity) Unlimited external guests via workspace invite — Email Service Included No — Message History Searchable(years) 10 years standard — Workflow Automation Steps(built-in steps) 50+ — Pre-Built Integrations(count) 2,400+ integrations — Message History on Free Plan(days) 90-day limited access — Message History Retention(status) 10,000 messages (free); unlimited (paid) — Built-in Project Management(status) No (requires integrations) — Max Video Conference Participants(people) 1000 10000 Video Conference Max Participants(participants) 150 300 Message Search History (Free Tier)(days) 90 days 90 days Message Search Speed (Free Tier)(indexing scope) All messages indexed instantly Last 3 months only Video Meeting Participant Limit(participants) 2000 300 Self-Hosting Capability Not available — Cloud Storage Included Per User(GB) 0 GB (integrations only) — Maximum Video Conference Participants (Standard Plan)(participants) 2 — Message History Search (Self-Hosted)(messages) 10,000 (free), unlimited (paid) — File Storage (Free Plan)(GB) 5GB — Free Plan App Integrations(apps) 10 maximum — Max Group Video Call Participants(users) 3 (free tier) 10,000 Voice Call Audio Quality Score(1-10 scale) 7.5 8.0 Offline Message Functionality(yes/no) Limited Full Message History Searchability Limited on free plan (10,000 messages); full search on paid — Message History Retention (Free Tier)(days) 90 days Unlimited Maximum Free Tier Group Meeting Duration(hours) 24 hours — AI Meeting Notes Availability Premium only ($10/user/month) — AI Meeting Summaries Basic transcription only — Free Meeting Duration (3+ participants)(minutes) 60 minutes — Real-Time Translation Languages(count) 31 languages — Maximum Video Meeting Participants(participants) 300+ participants — Language Translation Support(languages) 40+ languages (Teams Premium) — Maximum Video Conference Participants(participants) 10,000 participants — Supported Language Captions(languages) 60+ languages — Breakout Rooms Maximum Count(rooms) 50 breakout rooms — Screen Sharing Participants(simultaneous users) 1 primary — Chat Message Retention (Free Tier)(months) 36+ months — Free Tier Message History(messages) 10,000 most recent — Video Participants (Free Tier)(maximum simultaneous) 100 video participants — Video Conference Participant Limit(participants) 300 participants — | ||
| Paid Starting Price(USD/user/mo) | $7.25(winner) | Included with M365 |
| Standalone Monthly Pricing (Pro Tier)(USD per user per month) | $7.25 | $6.00 (with Microsoft 365 Business Basic)(winner) |
| Annual Cost per User (Pro Tier)(USD) | $87 (billed yearly) | $72 (bundled pricing)(winner) |
| Monthly Cost per 20-Person Team(USD) | $3,600 (Pro plan at $15/user) | — |
| Free Trial Duration(uses) | 7 days | — |
| Base Monthly Cost Per User(USD) | $8.25 (Pro plan, min 3 users)(winner) | $6-12 |
Show 43 more attributesBase Monthly Cost Per User(USD) $7.25 — Business+ Tier Monthly Cost Per User(USD) $12.50 — Price Stability (2024-2026)(months) No increases for 33 months — Free Tier Cost(USD) Free — Pro/Standard Monthly Cost(USD per user/month) $7.25 — Minimum Monthly Cost Per User(USD) $7.25 — Years Price Stable (2026)(months) 33+ months — Pro Plan Annual Cost(USD) $150 (billed monthly) $70/year (via Microsoft 365 Business Basic) Pro Plan Monthly Cost (Annual Billing)(USD per user) $8.75 — Monthly Cost (Pro Plan)(USD) $12.50 per user/month $15 (Essentials) / $20 (Standard) Enterprise Plan Monthly Cost Per User(USD) $12.50 — Paid Plan Starting Price(USD/month) $7.25 $6 Monthly Cost Per User(USD) $8-12.50 (Pro/Business+) — Monthly Cost (Pro Plan, 50 users)(USD) $412.50/month — Monthly Cost (10 Users, Annual)(USD) $150/month ($1,800/year) — Price Per User Per Month (Pro/Standard)(USD) $12.50/user (Pro plan) — Base Monthly Cost (10-person team)(USD) $80-150 — Cost for 50-person team(USD/month) $400-750 — Pro Plan Monthly Cost(USD) $8.75 (annual) $6.99 Annual Subscription Cost (Pro, 100 users)(USD) $10,500 $7,800 or free with Microsoft 365 Monthly Subscription Cost (Pro Plan)(USD) $12.50 — Team Size Cost Efficiency Threshold(team members) Cost-effective until ~12 users — Monthly Subscription Cost (Pro/Standard)(USD) $8.25 $0 (bundled) or $12.50 (standalone) Pro Plan Monthly Cost per User(USD) $12.50 $6.00 Cost Per User (Annual, Lowest Paid Tier)(USD/month) $8/month — Monthly Cost Per User (Standard Tier, Annual Billing)(USD) $7.25 — Base Cost Per User/Month(USD) $8.99 — Monthly Cost Per User (Standard)(USD) $8-15 — Base Monthly Pricing (Annual Billed)(USD per user) $8 — Pro/Standard Plan Cost per User/Month(USD) $12.50/user/month — Monthly Cost Per User (Pro Plan)(USD) $12.50 (Pro plan) $6.00 (or free with M365) Starting Monthly Cost Per User(USD) $6.67 — Maximum Monthly Cost Per User(USD) $12.50 — Starting Paid Plan Cost(USD/month) $6/month (Microsoft 365 bundle) — Free Plan Monthly Cost(USD) $6 (Teams Essentials) — Starting Monthly Price Per User(USD) $4.50 — Base Pricing (Monthly)(USD) $7.00 (Business Basic 2026 price) — Starting Price (Monthly)(USD) $0 (Free) or $6 (Standard) — Free Tier Call Duration Limit(minutes) 60 minutes (100 participants max) — Monthly Cost (1 Pro User)(USD) $6.00 — Base Monthly Cost (Single User)(USD) $4.00 (Teams Essentials) - $12.50 (Teams Premium) — Free Tier Monthly Cost(USD) $0 (limited) — Workspace/Server Creation Cost(USD per month) Free Teams ($5-12/month for Pro) — | ||
| Message Search Speed(seconds) | Excellent - optimized search indexing | 2-4 seconds average |
| Voice Audio Codec Quality(kHz) | 16 kHz | — |
| Maximum Video Call Participants(people) | 15 participants | — |
| Real-time Messaging Speed(ms (message delivery latency)) | 50-100ms (instant) | — |
| Time to Deploy(seconds (average)) | 3-7 | 1-3(winner) |
Show 10 more attributesUptime Guarantee(percent) 99.99% 99.9% Desktop App Memory Usage(MB) 280 MB 450 MB Message Search Response Time(seconds) 2-4 seconds — Message Delivery Latency(milliseconds) <100ms 200-300ms Minimum Bandwidth for HD Video(Mbps) 4.5 Mbps — Voice Latency(milliseconds) 80-120ms — Screen Sharing Maximum FPS(fps) 30fps — Video Quality (Standard)(resolution & fps) 1080p @ 30fps — 4K Video Quality Support(fps) 4K @ 30fps (Premium only) — Voice Latency (Lower is Better)(milliseconds) 50-80ms — | ||
| Mobile App Feature Parity | 95%(winner) | 85% |
| Global Market Share(%) | 65% | — |
| Enterprise Deployment Adoption (500+ seat orgs)(percentage) | 67% of deployments | — |
| Global Enterprise Video Conferencing Market Share (2024)(percent) | 28.2% | — |
| Self-Hosting Available | No | — |
| Self-Hosted/On-Premises Option | No (cloud-only) | — |
| Time to Operational Team Setup(hours) | Less than 1 hour | — |
| Self-Hosting/On-Premises Option | Not available (cloud-only) | — |
| Self-Hosted Deployment Option | Cloud-only SaaS | — |
Show 1 more attributeOn-Premise Deployment Support Not available — | ||
| Google Workspace Integration Level | 2 out of 5 (available via integration, not native) | — |
| AI Features Count (2026)(features) | 30+ (CRM tools, meeting summaries, automation, SlackBot enhancements) | — |
| Available Integrations(integrations) | 2000+ | — |
| Native Third-Party Integrations(count) | 2,000+(winner) | 500+ apps |
| Third-Party App Integrations Available(apps) | 2,300+ | — |
| Native Integrations(count) | 2,000+ | — |
| Available Integrations(count) | 2,000+(winner) | 1,000+ native integrations |
Show 2 more attributesThird-Party Integrations Available(integrations) 2,000+ 500+ Third-Party Integrations (Native)(count) 1000+ via Microsoft AppSource — | ||
| Deployment Options | Cloud-based SaaS only | — |
| Deployment Options | Cloud-only SaaS | Cloud-only (SaaS) |
| GDPR & Data Sovereignty Compliance | Compliant but data on Salesforce servers | — |
| End-to-End Encryption Available | DMs only, Enterprise+ plan | — |
| End-to-End Encryption Default(null) | Not available | — |
| Source Code Availability | Proprietary/closed | Closed proprietary |
| End-to-End Encryption | Partial (DMs only, beta feature) | — |
Show 6 more attributesEnterprise Security Certifications(count) SOC 2, ISO 27001, GDPR SOC 2, FedRAMP, ISO 27001, HIPAA Enterprise Security Compliance(certifications) ISO 27001, SOC 2, HIPAA, GDPR — Security Certifications(count) 8 (SOC 2, FedRAMP, HIPAA, ISO 27001) — HIPAA Compliance Certification(yes/no) Certified — SOC 2 Type II Compliance Yes (SOC 2, HIPAA, FedRAMP) — End-to-End Encryption Launch Year(year) 2021 — | ||
| Maximum Meeting Participants(participants) | Unlimited group chats | — |
| Third-Party Integrations(apps) | 2,200+ apps(winner) | 500+ |
| Built-in Task Management(features) | No: messaging-only, requires integrations | — |
| Third-party Integrations(integrations) | 2000+ | — |
| Native Integrations Available(integrations) | 2200+(winner) | 1000+ |
| Native Microsoft 365 Integration | API-based (basic) | Native (deep) |
| AI Features (2026) | Workflow automation, search enhancement | — |
| Real-Time Translation | Not available | — |
| Asynchronous Communication | Optimized with threads and archives | — |
| Zoom Rooms Cost(USD per room/month) | N/A | — |
| AI Assistant Capability | Slack AI (optional on paid plans) | — |
| AI Transcription Languages Supported(languages) | 0 (not native feature) | — |
| AI Meeting Assistant | Slack AI (search, summarization, drafting) | — |
| AI Transcription Included(support level) | No native feature | — |
| AI Translation Languages (2026)(languages) | Limited translation features | — |
Show 2 more attributesAI Meeting Assistant Cost(USD/month) Copilot Pro required ($20+ per tenant) — AI Assistant Integration Copilot with GPT-4, speech-to-text, real-time translation — | ||
| Google Workspace Native Integration | Limited (requires custom setup) | — |
| Setup Required for Video Calls | Integration setup or third-party tools | — |
| Native Microsoft Office Integration | Full (Word, Excel, PowerPoint, Outlook) | — |
| Microsoft 365 Ecosystem Integration(integration depth) | Native: Word, Excel, SharePoint, OneDrive, Outlook, Power BI | — |
| Office Suite Integration Level | Office 365/Microsoft 365 (native) | — |
Show 3 more attributesOffice 365 Integration Level(integration score) Native (OneDrive, SharePoint, Outlook, Excel co-auth) — Microsoft 365 Integration Full integration with Office apps — Calendar Integration Native Outlook calendar sync — | ||
| Workflow Automation Complexity | Advanced with conditional logic | — |
| Storage Per User (Standard Plan)(GB) | Variable by plan | — |
| Cloud Storage (Base Plan)(GB) | 10 GB | — |
| File Storage Included(GB) | 5GB (Free), varies by plan | — |
| Free Tier File Storage(GB per user) | 1 GB shared workspace | 100 GB per user(winner) |
| Message history retention (free plan)(days) | 90 days searchable | — |
Show 9 more attributesFile Upload Limit(GB) 20GB 250GB File Storage Per User(GB) 100 (workspace) 1000 (1TB OneDrive) Maximum File Storage (Free Tier)(GB) 5GB shared workspace — Meeting Recording Retention (Free)(days) Unlimited (OneDrive) — Free Plan Cloud Storage(GB) 5 GB (OneDrive) — Maximum File Upload Size(TB) 2 GB per file — Meeting Recording Storage (Free)(hours) Unlimited in OneDrive — Free Recording Storage(GB) Unlimited — Message History Retention (Free)(searchable messages) 3,000 searchable — | ||
| Open Source | No, proprietary | — |
| Maximum Video Length (Free Tier)(minutes) | N/A | — |
| Maximum Video Resolution(pixels) | Requires 3rd party | 1080p (1920x1080) |
| Standard Video Resolution(pixels) | 1920x1080 | — |
| Free Tier Message History Retention(days) | 90 days | — |
| Enterprise Uptime SLA(%) | 99.99% | — |
| Uptime SLA Guarantee(percent) | 99.99%(winner) | 99.9% |
| Service uptime SLA guarantee(percent) | 99.99% | — |
| User Workspace Limit (Free Tier)(workspaces) | 1 workspace | — |
| Maximum Meeting Participants (Free)(participants) | 3 participants | — |
| Maximum Meeting Participants (Paid)(participants) | Unlimited (slide deck view only) | — |
| FedRAMP Authorization(Yes/No) | No | — |
| HIPAA Compliance Certified | Yes (Business+ plan required) | Yes |
| Data Residency Control(options) | Microsoft-managed regional datacenters (limited control) | — |
| SOC 2 Type II Certified | Yes | — |
| Custom Workflow Automation | Advanced (Workflow Builder, automations) | — |
| Users Per Workspace(count) | Unlimited | — |
| Workspace Members (Free Tier Limit)(users) | Unlimited workspaces | — |
| Maximum Webinar Participants(participants) | 10,000 | — |
| Total Registered Users(millions) | 750 million | — |
| Global Active Users(millions) | 750+ million messages daily across 750k+ organizations | — |
| Monthly Active Users(millions) | ~50 million (daily active) | 320 million(winner) |
| Paying Organizations/Enterprise Customers(thousands) | 750 (in thousands = 750,000 paying orgs) | — |
| Daily Posts Published (Organic)(millions) | N/A | — |
| Active Workspaces(workspaces) | 750,000+ | — |
| Active Workspaces/Deployments(count) | 750,000 | — |
| GitHub Stars (Community)(stars) | N/A (proprietary) | — |
| Active Organizational Users(organizations) | 750,000+ workspaces | — |
| User Base Size(millions of developers) | 21 million daily active | 280 million monthly active |
Show 5 more attributesActive Daily Users(millions) 20+ million daily active — Registered Users Globally(millions) 350+ million monthly active users — Monthly Active Users (MAU)(millions) 320M — Active Monthly Users(millions) 300+ million users — Free Tier Monthly Active Users(millions) 320 million — | ||
| Threading Model | Channel-based threads (contextual loss in active channels) | — |
| Open-Source | No (proprietary) | — |
| Open-Source Availability | Proprietary closed-source | — |
| Mobile App Type | Native iOS/Android with feature-parity | — |
| Native Video/Audio Calls | Yes (Slack Huddles) | — |
| Native App Integrations Available(count) | 2,400+ apps | — |
| Paid Workspaces/Users (Enterprise Adoption)(workspaces) | 750,000+ paid workspaces | — |
| Active Global Workspaces/Deployments(count) | 750,000+ active workspaces | — |
| Active Workspaces (2024)(thousands) | 750,000+ workspaces | — |
| Daily Active Users Worldwide(users) | 750,000+ | — |
| Setup Time for New Team(days) | 0.5-1 hour | — |
| Learning Curve(difficulty rating) | 2(winner) | 5 |
| Message Search Quality Score(1-10 scale) | 9.5(winner) | 6.0 |
| User Learning Curve(difficulty rating) | Steep (enterprise-focused interface) | — |
| Setup Time for New Users(hours) | 8-10 (account creation + installation) | — |
| Voice Codec Quality Rating(score (1-10)) | 7.5 | 8(winner) |
| Voice Chat Quality Rating(subjective score) | Excellent (optimized for reliability) | — |
| User interface satisfaction rating(out of 10) | 9.2/10 | — |
| Average User Adoption Time(days) | 1-3 days | — |
| G2 Ease of Use Rating (2024)(stars) | 4.5/5(winner) | 4.0/5 |
| G2 User Interface Rating(out of 5) | 4.6/5 (12,400 reviews)(winner) | 4.1/5 (8,300 reviews) |
| iOS App Rating(stars out of 5) | 4.7 | — |
Show 1 more attributeMobile App Quality Rating(stars) 4.5 — | ||
| Maximum video call participants (free tier)(people) | 100 participants | — |
| Maximum Video Conference Participants (Free)(people) | Limited (typically 3-4) | 100(winner) |
| Free Plan Video Participants(participants) | 2 participants | — |
| Free Plan Meeting Duration Limit(minutes) | 60 minutes | 60 minutes (3+ participants) |
| Meeting Recording Storage (Pro)(storage capacity) | N/A | — |
Show 1 more attributeScreen Sharing Quality(resolution) 1080p (30 fps) — | ||
| Enterprise app marketplace size(applications) | 2,000+ apps (Slack App Directory) | — |
| Third-Party Bot Integrations Available(count) | 1,500+ apps | — |
| Free Group Video Call Duration Limit(minutes) | 40 | 60 minutes(winner) |
| Message Search Capability(text) | Full-text indexed across all messages | Basic keyword search (limited free tier) |
| Daily Active Users(millions) | 21 million | 320 million(winner) |
| Message History (Free Plan)(days) | 90 days | unlimited |
| Message Search History(messages) | 10,000 (free tier); unlimited (paid) | — |
| Organizations Using Platform(count (thousands)) | 750,000+ | — |
| GDPR Compliance | Certified (SOC 2 Type II, GDPR) | — |
| Maximum Video Length (Free Plan)(minutes) | N/A | — |
| Free Tier Video Storage(videos) | Unlimited (90-day history) | — |
| Enterprise Support SLA | 1-4 hours (Enterprise Grid) | — |
| Enterprise Support Response Time(hours) | 1 | — |
| Real-Time Chat Capability(support level) | Full-featured messaging | — |
| Message History (Pro Plan)(days) | Unlimited | — |
| Asynchronous Workflow Optimization(design focus) | Secondary feature | — |
| Countries Supported(countries) | 150+ | — |
| Languages Supported(languages) | 10+ | — |
| Setup Time for New Teams(minutes) | 15-20(winner) | 30-45 |
| AI-Powered Features(count) | Slack AI assistant included | Copilot Pro integration |
| AI Features Integration(count) | 8 (Copilot, live transcription, noise suppression, translation) | — |
| Threading Model Type | Channel + Reply threads | — |
| Video Conference Capacity(participants) | 15 | — |
| Free Trial Length(days) | 14 days full feature access | — |
| Free Trial Period(days) | 30 days (limited features) | — |
| Free Cloud Recording Capability | No, paid only | — |
| Office 365 Native Integration | Full native integration | — |
| Browser Join Without App | Often requires app/account | — |
| Auto-Generated Meeting Transcripts | Available (free in 43 languages) | — |
| Real-Time Caption Languages Supported(languages) | 60+ languages | — |
| Maximum Free Breakout Rooms(rooms) | 50 rooms | — |
| Maximum Meeting Participants(participants) | 10,000 | — |
| Free Tier Participant Limit(participants) | 100 participants | — |
| Maximum Participants (Standard Meeting)(people) | 300 participants | — |
| Maximum Participants Per Meeting(participants) | 300 standard | — |
| Microsoft 365 Integration Depth | 8+ apps (Outlook, Excel, Word, OneDrive, SharePoint, Project, Planner, Power BI) | — |
| Advanced Chat Features (Channels, Threading, Workflows) | Advanced (channels, nested threads, queues, connectors) | — |
| Gartner Meeting Solutions Rating(stars) | 4.5 stars | — |
| Gartner Review Sample Size(reviews) | 3,669 reviews | — |
| Gartner Customer Rating(stars) | 4.5 stars | — |
| Customer Reviews Analyzed(count) | 3,668 reviews | — |
| Mobile App Store Rating(stars out of 5) | 4.2 (2.4M reviews) | — |
| 3-Year Total Cost of Ownership (1,000 users)(USD) | Lower (integrated M365) | — |
| Video Quality Rating(%) | 7.9% positive | — |
| Real-Time Translation Support(null) | Limited to basic captions | — |
| Native Cisco Hardware Integration(null) | Third-party device support only | — |
| AI Features in Base Tier | Limited (Copilot requires E5) | — |
| Maximum Video Sharing Quality(fps at resolution) | 4K at 30fps | — |
| Default Video Resolution(pixels) | 720p standard (1080p available) | — |
| Native Maximum Video Resolution(p/fps) | 720p30fps | — |
| 3-Year TCO Advantage for 1,000 Users with M365(percentage savings) | 47% lower cost | — |
| Video Resolution Support(maximum resolution) | 4K (3840x2160) | — |
| Supported Operating Systems | Windows, Mac, iOS, Android, Web | — |
| Cross-Platform Native Support(platforms) | Windows, Mac, iOS, Android | — |
| Monthly Active Users (2024)(millions) | 320 million | — |
| Maximum Free Server Categories(categories) | Limited (fixed structure) | — |
| Enterprise Fortune 500 Adoption Rate(percent) | 80% | — |
| Free Tier Meeting Duration for Group Calls(minutes) | 60 minutes (unlimited participants) | — |
| Annual TCO (1,000 users, 3-year average)(USD) | $48,000-150,000 | — |
| Free Meeting Duration Limit(minutes) | Unlimited | — |
| Maximum Simultaneous Screen Shares(participants) | 4 participants | — |
| Maximum Free Plan Participants(people) | 100 participants | — |
| Free Group Meeting Duration(minutes) | Unlimited | — |
| Base Pricing (Team/Workspace)(USD per month) | $6 per user (Teams Essentials) | — |
| Office 365 App Integration Level(integration depth) | Native integration (Word, Excel, PowerPoint, OneDrive) | — |
| Free Plan Maximum Participants(participants) | 100 | — |
| Free Plan Group Meeting Duration(minutes) | 60 | — |
SSlack
Microsoft TeamsApp Integrations(count)
2,600+
~700
Third-Party App Integrations(count)
2,400+
1,000+
Video Meeting Capacity(participants)
Up to 2,000 (with paid plan)
Up to 10,000
Native Office Integration
Limited (third-party connectors)
Native with SharePoint, OneDrive, Office Web Apps
AI Copilot Features
Slack AI (summarization, search, assisted writing)
Microsoft Copilot Pro (enterprise AI, meeting insights)
Show 49 more attributes
Message History Retention on Free Plan(count)
10,000 most recent
—
Free Tier Meeting Participant Limit(participants)
Unlimited (Slack Huddles for video limited to 50 participants)
—
Native Video Conferencing
Huddles for brief video, limited to 50 participants; requires external tool for full conferencing
—
Meeting Recording & Auto-Transcription
Not native; requires integration with Otter.ai or similar third-party services
—
Asynchronous Communication Strength(scale 1-5)
5 out of 5 (core feature with channels, threads, and history)
—
Third-Party Integrations Available(count)
2,000+
—
Enterprise AI Features
Advanced AI assistant, smart summaries, automation
—
Free Plan Message History(days)
90 days
—
Free Message History(days)
90 days maximum
—
Free Plan Message History Retention(days)
90 days
—
Free Plan External Guest Collaboration(capacity)
Unlimited external guests via workspace invite
—
Email Service Included
No
—
Message History Searchable(years)
10 years standard
—
Workflow Automation Steps(built-in steps)
50+
—
Pre-Built Integrations(count)
2,400+ integrations
—
Message History on Free Plan(days)
90-day limited access
—
Message History Retention(status)
10,000 messages (free); unlimited (paid)
—
Built-in Project Management(status)
No (requires integrations)
—
Max Video Conference Participants(people)
1000
10000
Video Conference Max Participants(participants)
150
300
Message Search History (Free Tier)(days)
90 days
90 days
Message Search Speed (Free Tier)(indexing scope)
All messages indexed instantly
Last 3 months only
Video Meeting Participant Limit(participants)
2000
300
Self-Hosting Capability
Not available
—
Cloud Storage Included Per User(GB)
0 GB (integrations only)
—
Maximum Video Conference Participants (Standard Plan)(participants)
2
—
Message History Search (Self-Hosted)(messages)
10,000 (free), unlimited (paid)
—
File Storage (Free Plan)(GB)
5GB
—
Free Plan App Integrations(apps)
10 maximum
—
Max Group Video Call Participants(users)
3 (free tier)
10,000
Voice Call Audio Quality Score(1-10 scale)
7.5
8.0
Offline Message Functionality(yes/no)
Limited
Full
Message History Searchability
Limited on free plan (10,000 messages); full search on paid
—
Message History Retention (Free Tier)(days)
90 days
Unlimited
Maximum Free Tier Group Meeting Duration(hours)
24 hours
—
AI Meeting Notes Availability
Premium only ($10/user/month)
—
AI Meeting Summaries
Basic transcription only
—
Free Meeting Duration (3+ participants)(minutes)
60 minutes
—
Real-Time Translation Languages(count)
31 languages
—
Maximum Video Meeting Participants(participants)
300+ participants
—
Language Translation Support(languages)
40+ languages (Teams Premium)
—
Maximum Video Conference Participants(participants)
10,000 participants
—
Supported Language Captions(languages)
60+ languages
—
Breakout Rooms Maximum Count(rooms)
50 breakout rooms
—
Screen Sharing Participants(simultaneous users)
1 primary
—
Chat Message Retention (Free Tier)(months)
36+ months
—
Free Tier Message History(messages)
10,000 most recent
—
Video Participants (Free Tier)(maximum simultaneous)
100 video participants
—
Video Conference Participant Limit(participants)
300 participants
—
Paid Starting Price(USD/user/mo)
$7.25
Included with M365
Standalone Monthly Pricing (Pro Tier)(USD per user per month)
$7.25
$6.00 (with Microsoft 365 Business Basic)
Annual Cost per User (Pro Tier)(USD)
$87 (billed yearly)
$72 (bundled pricing)
Monthly Cost per 20-Person Team(USD)
$3,600 (Pro plan at $15/user)
—
Free Trial Duration(uses)
7 days
—
Base Monthly Cost Per User(USD)
$8.25 (Pro plan, min 3 users)
$6-12
Show 43 more attributes
Base Monthly Cost Per User(USD)
$7.25
—
Business+ Tier Monthly Cost Per User(USD)
$12.50
—
Price Stability (2024-2026)(months)
No increases for 33 months
—
Free Tier Cost(USD)
Free
—
Pro/Standard Monthly Cost(USD per user/month)
$7.25
—
Minimum Monthly Cost Per User(USD)
$7.25
—
Years Price Stable (2026)(months)
33+ months
—
Pro Plan Annual Cost(USD)
$150 (billed monthly)
$70/year (via Microsoft 365 Business Basic)
Pro Plan Monthly Cost (Annual Billing)(USD per user)
$8.75
—
Monthly Cost (Pro Plan)(USD)
$12.50 per user/month
$15 (Essentials) / $20 (Standard)
Enterprise Plan Monthly Cost Per User(USD)
$12.50
—
Paid Plan Starting Price(USD/month)
$7.25
$6
Monthly Cost Per User(USD)
$8-12.50 (Pro/Business+)
—
Monthly Cost (Pro Plan, 50 users)(USD)
$412.50/month
—
Monthly Cost (10 Users, Annual)(USD)
$150/month ($1,800/year)
—
Price Per User Per Month (Pro/Standard)(USD)
$12.50/user (Pro plan)
—
Base Monthly Cost (10-person team)(USD)
$80-150
—
Cost for 50-person team(USD/month)
$400-750
—
Pro Plan Monthly Cost(USD)
$8.75 (annual)
$6.99
Annual Subscription Cost (Pro, 100 users)(USD)
$10,500
$7,800 or free with Microsoft 365
Monthly Subscription Cost (Pro Plan)(USD)
$12.50
—
Team Size Cost Efficiency Threshold(team members)
Cost-effective until ~12 users
—
Monthly Subscription Cost (Pro/Standard)(USD)
$8.25
$0 (bundled) or $12.50 (standalone)
Pro Plan Monthly Cost per User(USD)
$12.50
$6.00
Cost Per User (Annual, Lowest Paid Tier)(USD/month)
$8/month
—
Monthly Cost Per User (Standard Tier, Annual Billing)(USD)
$7.25
—
Base Cost Per User/Month(USD)
$8.99
—
Monthly Cost Per User (Standard)(USD)
$8-15
—
Base Monthly Pricing (Annual Billed)(USD per user)
$8
—
Pro/Standard Plan Cost per User/Month(USD)
$12.50/user/month
—
Monthly Cost Per User (Pro Plan)(USD)
$12.50 (Pro plan)
$6.00 (or free with M365)
Starting Monthly Cost Per User(USD)
$6.67
—
Maximum Monthly Cost Per User(USD)
$12.50
—
Starting Paid Plan Cost(USD/month)
$6/month (Microsoft 365 bundle)
—
Free Plan Monthly Cost(USD)
$6 (Teams Essentials)
—
Starting Monthly Price Per User(USD)
$4.50
—
Base Pricing (Monthly)(USD)
$7.00 (Business Basic 2026 price)
—
Starting Price (Monthly)(USD)
$0 (Free) or $6 (Standard)
—
Free Tier Call Duration Limit(minutes)
60 minutes (100 participants max)
—
Monthly Cost (1 Pro User)(USD)
$6.00
—
Base Monthly Cost (Single User)(USD)
$4.00 (Teams Essentials) - $12.50 (Teams Premium)
—
Free Tier Monthly Cost(USD)
$0 (limited)
—
Workspace/Server Creation Cost(USD per month)
Free Teams ($5-12/month for Pro)
—
Message Search Speed(seconds)
Excellent - optimized search indexing
2-4 seconds average
Voice Audio Codec Quality(kHz)
16 kHz
—
Maximum Video Call Participants(people)
15 participants
—
Real-time Messaging Speed(ms (message delivery latency))
50-100ms (instant)
—
Time to Deploy(seconds (average))
3-7
1-3
Show 10 more attributes
Uptime Guarantee(percent)
99.99%
99.9%
Desktop App Memory Usage(MB)
280 MB
450 MB
Message Search Response Time(seconds)
2-4 seconds
—
Message Delivery Latency(milliseconds)
<100ms
200-300ms
Minimum Bandwidth for HD Video(Mbps)
4.5 Mbps
—
Voice Latency(milliseconds)
80-120ms
—
Screen Sharing Maximum FPS(fps)
30fps
—
Video Quality (Standard)(resolution & fps)
1080p @ 30fps
—
4K Video Quality Support(fps)
4K @ 30fps (Premium only)
—
Voice Latency (Lower is Better)(milliseconds)
50-80ms
—
Mobile App Feature Parity
95%
85%
Global Market Share(%)
65%
—
Enterprise Deployment Adoption (500+ seat orgs)(percentage)
67% of deployments
—
Global Enterprise Video Conferencing Market Share (2024)(percent)
28.2%
—
Self-Hosting Available
No
—
Self-Hosted/On-Premises Option
No (cloud-only)
—
Time to Operational Team Setup(hours)
Less than 1 hour
—
Self-Hosting/On-Premises Option
Not available (cloud-only)
—
Self-Hosted Deployment Option
Cloud-only SaaS
—
Show 1 more attribute
On-Premise Deployment Support
Not available
—
Google Workspace Integration Level
2 out of 5 (available via integration, not native)
—
AI Features Count (2026)(features)
30+ (CRM tools, meeting summaries, automation, SlackBot enhancements)
—
Available Integrations(integrations)
2000+
—
Native Third-Party Integrations(count)
2,000+
500+ apps
Third-Party App Integrations Available(apps)
2,300+
—
Native Integrations(count)
2,000+
—
Available Integrations(count)
2,000+
1,000+ native integrations
Show 2 more attributes
Third-Party Integrations Available(integrations)
2,000+
500+
Third-Party Integrations (Native)(count)
1000+ via Microsoft AppSource
—
Deployment Options
Cloud-based SaaS only
—
Deployment Options
Cloud-only SaaS
Cloud-only (SaaS)
GDPR & Data Sovereignty Compliance
Compliant but data on Salesforce servers
—
End-to-End Encryption Available
DMs only, Enterprise+ plan
—
End-to-End Encryption Default(null)
Not available
—
Source Code Availability
Proprietary/closed
Closed proprietary
End-to-End Encryption
Partial (DMs only, beta feature)
—
Show 6 more attributes
Enterprise Security Certifications(count)
SOC 2, ISO 27001, GDPR
SOC 2, FedRAMP, ISO 27001, HIPAA
Enterprise Security Compliance(certifications)
ISO 27001, SOC 2, HIPAA, GDPR
—
Security Certifications(count)
8 (SOC 2, FedRAMP, HIPAA, ISO 27001)
—
HIPAA Compliance Certification(yes/no)
Certified
—
SOC 2 Type II Compliance
Yes (SOC 2, HIPAA, FedRAMP)
—
End-to-End Encryption Launch Year(year)
2021
—
Maximum Meeting Participants(participants)
Unlimited group chats
—
Third-Party Integrations(apps)
2,200+ apps
500+
Built-in Task Management(features)
No: messaging-only, requires integrations
—
Third-party Integrations(integrations)
2000+
—
Native Integrations Available(integrations)
2200+
1000+
Native Microsoft 365 Integration
API-based (basic)
Native (deep)
AI Features (2026)
Workflow automation, search enhancement
—
Real-Time Translation
Not available
—
Asynchronous Communication
Optimized with threads and archives
—
Zoom Rooms Cost(USD per room/month)
N/A
—
AI Assistant Capability
Slack AI (optional on paid plans)
—
AI Transcription Languages Supported(languages)
0 (not native feature)
—
AI Meeting Assistant
Slack AI (search, summarization, drafting)
—
AI Transcription Included(support level)
No native feature
—
AI Translation Languages (2026)(languages)
Limited translation features
—
Show 2 more attributes
AI Meeting Assistant Cost(USD/month)
Copilot Pro required ($20+ per tenant)
—
AI Assistant Integration
Copilot with GPT-4, speech-to-text, real-time translation
—
Google Workspace Native Integration
Limited (requires custom setup)
—
Setup Required for Video Calls
Integration setup or third-party tools
—
Native Microsoft Office Integration
Full (Word, Excel, PowerPoint, Outlook)
—
Microsoft 365 Ecosystem Integration(integration depth)
Native: Word, Excel, SharePoint, OneDrive, Outlook, Power BI
—
Office Suite Integration Level
Office 365/Microsoft 365 (native)
—
Show 3 more attributes
Office 365 Integration Level(integration score)
Native (OneDrive, SharePoint, Outlook, Excel co-auth)
—
Microsoft 365 Integration
Full integration with Office apps
—
Calendar Integration
Native Outlook calendar sync
—
Workflow Automation Complexity
Advanced with conditional logic
—
Storage Per User (Standard Plan)(GB)
Variable by plan
—
Cloud Storage (Base Plan)(GB)
10 GB
—
File Storage Included(GB)
5GB (Free), varies by plan
—
Free Tier File Storage(GB per user)
1 GB shared workspace
100 GB per user
Message history retention (free plan)(days)
90 days searchable
—
Show 9 more attributes
File Upload Limit(GB)
20GB
250GB
File Storage Per User(GB)
100 (workspace)
1000 (1TB OneDrive)
Maximum File Storage (Free Tier)(GB)
5GB shared workspace
—
Meeting Recording Retention (Free)(days)
Unlimited (OneDrive)
—
Free Plan Cloud Storage(GB)
5 GB (OneDrive)
—
Maximum File Upload Size(TB)
2 GB per file
—
Meeting Recording Storage (Free)(hours)
Unlimited in OneDrive
—
Free Recording Storage(GB)
Unlimited
—
Message History Retention (Free)(searchable messages)
3,000 searchable
—
Open Source
No, proprietary
—
Maximum Video Length (Free Tier)(minutes)
N/A
—
Maximum Video Resolution(pixels)
Requires 3rd party
1080p (1920x1080)
Standard Video Resolution(pixels)
1920x1080
—
Free Tier Message History Retention(days)
90 days
—
Enterprise Uptime SLA(%)
99.99%
—
Uptime SLA Guarantee(percent)
99.99%
99.9%
Service uptime SLA guarantee(percent)
99.99%
—
User Workspace Limit (Free Tier)(workspaces)
1 workspace
—
Maximum Meeting Participants (Free)(participants)
3 participants
—
Maximum Meeting Participants (Paid)(participants)
Unlimited (slide deck view only)
—
FedRAMP Authorization(Yes/No)
No
—
HIPAA Compliance Certified
Yes (Business+ plan required)
Yes
Data Residency Control(options)
Microsoft-managed regional datacenters (limited control)
—
SOC 2 Type II Certified
Yes
—
Custom Workflow Automation
Advanced (Workflow Builder, automations)
—
Users Per Workspace(count)
Unlimited
—
Workspace Members (Free Tier Limit)(users)
Unlimited workspaces
—
Maximum Webinar Participants(participants)
10,000
—
Total Registered Users(millions)
750 million
—
Global Active Users(millions)
750+ million messages daily across 750k+ organizations
—
Monthly Active Users(millions)
~50 million (daily active)
320 million
Paying Organizations/Enterprise Customers(thousands)
750 (in thousands = 750,000 paying orgs)
—
Daily Posts Published (Organic)(millions)
N/A
—
Active Workspaces(workspaces)
750,000+
—
Active Workspaces/Deployments(count)
750,000
—
GitHub Stars (Community)(stars)
N/A (proprietary)
—
Active Organizational Users(organizations)
750,000+ workspaces
—
User Base Size(millions of developers)
21 million daily active
280 million monthly active
Show 5 more attributes
Active Daily Users(millions)
20+ million daily active
—
Registered Users Globally(millions)
350+ million monthly active users
—
Monthly Active Users (MAU)(millions)
320M
—
Active Monthly Users(millions)
300+ million users
—
Free Tier Monthly Active Users(millions)
320 million
—
Threading Model
Channel-based threads (contextual loss in active channels)
—
Open-Source
No (proprietary)
—
Open-Source Availability
Proprietary closed-source
—
Mobile App Type
Native iOS/Android with feature-parity
—
Native Video/Audio Calls
Yes (Slack Huddles)
—
Native App Integrations Available(count)
2,400+ apps
—
Paid Workspaces/Users (Enterprise Adoption)(workspaces)
750,000+ paid workspaces
—
Active Global Workspaces/Deployments(count)
750,000+ active workspaces
—
Active Workspaces (2024)(thousands)
750,000+ workspaces
—
Daily Active Users Worldwide(users)
750,000+
—
Setup Time for New Team(days)
0.5-1 hour
—
Learning Curve(difficulty rating)
2
5
Message Search Quality Score(1-10 scale)
9.5
6.0
User Learning Curve(difficulty rating)
Steep (enterprise-focused interface)
—
Setup Time for New Users(hours)
8-10 (account creation + installation)
—
Voice Codec Quality Rating(score (1-10))
7.5
8
Voice Chat Quality Rating(subjective score)
Excellent (optimized for reliability)
—
User interface satisfaction rating(out of 10)
9.2/10
—
Average User Adoption Time(days)
1-3 days
—
G2 Ease of Use Rating (2024)(stars)
4.5/5
4.0/5
G2 User Interface Rating(out of 5)
4.6/5 (12,400 reviews)
4.1/5 (8,300 reviews)
iOS App Rating(stars out of 5)
4.7
—
Show 1 more attribute
Mobile App Quality Rating(stars)
4.5
—
Maximum video call participants (free tier)(people)
100 participants
—
Maximum Video Conference Participants (Free)(people)
Limited (typically 3-4)
100
Free Plan Video Participants(participants)
2 participants
—
Free Plan Meeting Duration Limit(minutes)
60 minutes
60 minutes (3+ participants)
Meeting Recording Storage (Pro)(storage capacity)
N/A
—
Show 1 more attribute
Screen Sharing Quality(resolution)
1080p (30 fps)
—
Enterprise app marketplace size(applications)
2,000+ apps (Slack App Directory)
—
Third-Party Bot Integrations Available(count)
1,500+ apps
—
Free Group Video Call Duration Limit(minutes)
40
60 minutes
Message Search Capability(text)
Full-text indexed across all messages
Basic keyword search (limited free tier)
Daily Active Users(millions)
21 million
320 million
Message History (Free Plan)(days)
90 days
unlimited
Message Search History(messages)
10,000 (free tier); unlimited (paid)
—
Organizations Using Platform(count (thousands))
750,000+
—
GDPR Compliance
Certified (SOC 2 Type II, GDPR)
—
Maximum Video Length (Free Plan)(minutes)
N/A
—
Free Tier Video Storage(videos)
Unlimited (90-day history)
—
Enterprise Support SLA
1-4 hours (Enterprise Grid)
—
Enterprise Support Response Time(hours)
1
—
Real-Time Chat Capability(support level)
Full-featured messaging
—
Message History (Pro Plan)(days)
Unlimited
—
Asynchronous Workflow Optimization(design focus)
Secondary feature
—
Countries Supported(countries)
150+
—
Languages Supported(languages)
10+
—
Setup Time for New Teams(minutes)
15-20
30-45
AI-Powered Features(count)
Slack AI assistant included
Copilot Pro integration
AI Features Integration(count)
8 (Copilot, live transcription, noise suppression, translation)
—
Threading Model Type
Channel + Reply threads
—
Video Conference Capacity(participants)
15
—
Free Trial Length(days)
14 days full feature access
—
Free Trial Period(days)
30 days (limited features)
—
Free Cloud Recording Capability
No, paid only
—
Office 365 Native Integration
Full native integration
—
Browser Join Without App
Often requires app/account
—
Auto-Generated Meeting Transcripts
Available (free in 43 languages)
—
Real-Time Caption Languages Supported(languages)
60+ languages
—
Maximum Free Breakout Rooms(rooms)
50 rooms
—
Maximum Meeting Participants(participants)
10,000
—
Free Tier Participant Limit(participants)
100 participants
—
Maximum Participants (Standard Meeting)(people)
300 participants
—
Maximum Participants Per Meeting(participants)
300 standard
—
Microsoft 365 Integration Depth
8+ apps (Outlook, Excel, Word, OneDrive, SharePoint, Project, Planner, Power BI)
—
Advanced Chat Features (Channels, Threading, Workflows)
Advanced (channels, nested threads, queues, connectors)
—
Gartner Meeting Solutions Rating(stars)
4.5 stars
—
Gartner Review Sample Size(reviews)
3,669 reviews
—
Gartner Customer Rating(stars)
4.5 stars
—
Customer Reviews Analyzed(count)
3,668 reviews
—
Mobile App Store Rating(stars out of 5)
4.2 (2.4M reviews)
—
3-Year Total Cost of Ownership (1,000 users)(USD)
Lower (integrated M365)
—
Video Quality Rating(%)
7.9% positive
—
Real-Time Translation Support(null)
Limited to basic captions
—
Native Cisco Hardware Integration(null)
Third-party device support only
—
AI Features in Base Tier
Limited (Copilot requires E5)
—
Maximum Video Sharing Quality(fps at resolution)
4K at 30fps
—
Default Video Resolution(pixels)
720p standard (1080p available)
—
Native Maximum Video Resolution(p/fps)
720p30fps
—
3-Year TCO Advantage for 1,000 Users with M365(percentage savings)
47% lower cost
—
Video Resolution Support(maximum resolution)
4K (3840x2160)
—
Supported Operating Systems
Windows, Mac, iOS, Android, Web
—
Cross-Platform Native Support(platforms)
Windows, Mac, iOS, Android
—
Monthly Active Users (2024)(millions)
320 million
—
Maximum Free Server Categories(categories)
Limited (fixed structure)
—
Enterprise Fortune 500 Adoption Rate(percent)
80%
—
Free Tier Meeting Duration for Group Calls(minutes)
60 minutes (unlimited participants)
—
Annual TCO (1,000 users, 3-year average)(USD)
$48,000-150,000
—
Free Meeting Duration Limit(minutes)
Unlimited
—
Maximum Simultaneous Screen Shares(participants)
4 participants
—
Maximum Free Plan Participants(people)
100 participants
—
Free Group Meeting Duration(minutes)
Unlimited
—
Base Pricing (Team/Workspace)(USD per month)
$6 per user (Teams Essentials)
—
Office 365 App Integration Level(integration depth)
Native integration (Word, Excel, PowerPoint, OneDrive)
—
Free Plan Maximum Participants(participants)
100
—
Free Plan Group Meeting Duration(minutes)
60
—
Pros & Cons
8 pros·6 cons across both
S
S
Slack
+4-3
Pros
Cleaner, more intuitive interface
2,600+ app integrations
Better organized channels
Preferred by developers
Cons
$7.25-12.50/user/month for most features
Video calling less polished
Smaller user base than Teams
Microsoft Teams
+4-3
Pros
320M+ daily active users
Included with Microsoft 365
Excellent video conferencing
Deep Office integration
Cons
Cluttered interface
Slower performance
Less intuitive than Slack
Frequently Asked Questions
5 questions
/
Slack is generally preferred by small tech-forward teams for its cleaner UX, better third-party integrations, and more enjoyable day-to-day experience. The free plan (90-day message history, 10 integrations) works for early-stage teams. However, if the team already pays for Microsoft 365 Business Basic ($6/user/month), Teams is included at no extra cost — making it the more economical choice for budget-conscious small teams. The key question is whether the team prefers UX quality (Slack) or zero marginal cost within an existing Microsoft subscription (Teams).
Microsoft Teams has approximately 320 million monthly active users as of 2026, compared to Slack's approximately 20 million daily active users. The gap is largely structural — Teams is bundled into every Microsoft 365 subscription, giving it automatic deployment across millions of organizations without a separate procurement decision. Slack reached ~12M DAUs before the COVID-19 pandemic and has grown to ~20M, but Teams grew from 32M DAUs (March 2020) to 320M MAUs through Microsoft 365 bundling and the remote-work adoption wave.
Slack can reduce internal email significantly — many Slack-first organizations report 70-80% reductions in internal email volume. Channels organize conversations by project or topic, threads keep discussions focused, and Slack AI summarizes channels you missed. However, Slack does not replace email for external communication (client emails, vendor correspondence), formal documentation (compliance records, legal notices), or asynchronous communication with non-Slack users. Most organizations use Slack for internal real-time messaging and retain email for external and formal communication.
Yes — Teams has an app directory with 700+ integrations including GitHub, Jira, Salesforce, Zendesk, Asana, Trello, and many others. However, Slack's integration library (2,600+ apps) is significantly larger, and many developer tools (PagerDuty, DataDog, CircleCI) integrate more deeply with Slack than Teams. For organizations where developer tooling integrations are critical, Slack's ecosystem advantage is real and meaningful. For organizations where Microsoft 365 integration is the primary requirement, Teams' native integrations are unmatched.
Microsoft Teams has a free standalone plan for personal use and small teams. For organizations, Teams Essentials is $4/user/month (standalone, without Office apps). The key value, however, is that Teams is included in all Microsoft 365 Business and Enterprise subscriptions — Business Basic starts at $6/user/month and includes Teams plus cloud email, OneDrive, and web Office apps. For organizations already paying Microsoft 365, Teams has zero incremental cost, which is its strongest commercial argument against Slack.
Expert Analysis: Slack vs Microsoft Teams
Slack and Microsoft Teams are the two dominant workplace communication platforms — but they represent fundamentally different philosophies: Slack built its product around conversation-first design and integrations, while Microsoft Teams built its platform around Office 365 deep integration and enterprise manageability. By 2026, Teams has far surpassed Slack in daily active user count, but Slack retains a loyal following among tech companies and developer-focused teams.
Slack (founded 2013, San Francisco; acquired by Salesforce for $27.7 billion in 2021): Slack pioneered the channel-based messaging format for workplaces and reached 12+ million daily active users before the pandemic. By 2026, Slack reports approximately 20 million DAUs and is deeply integrated into the Salesforce ecosystem (Salesforce Customer 360, Slack Canvas, Slack Lists). Slack's core strengths remain its user experience — the interface is widely considered more intuitive and enjoyable than Teams — and its integration library, with 2,600+ third-party app integrations via the Slack App Directory (GitHub, Jira, Zendesk, PagerDuty, Zapier, and hundreds more). Slack's 2024-2026 product focus has been Slack AI: summarization of channel history, thread summaries, search across your Slack history using natural language, and AI-assisted writing. Slack AI is included in Pro ($7.25/user/month) and above plans. Slack Canvas (document collaboration within Slack) and Slack Lists (lightweight project tracking) are Salesforce's attempt to make Slack a productivity platform, not just a messenger. Pricing: Free (90-day message history, 10 integrations); Pro $7.25/user/month; Business+ $12.50/user/month; Enterprise Grid (custom). The free tier's 90-day message history limit is Slack's most significant friction point for small teams.
Microsoft Teams (launched 2017, Microsoft, Redmond, Washington): Teams launched as a direct Skype for Business replacement and quickly became the enterprise communication standard, fueled by Microsoft's decision to include Teams in all Microsoft 365 Business and Enterprise subscriptions. By 2026, Microsoft Teams has approximately 320 million monthly active users — 16× Slack's DAU count. Teams' dominant position is largely structural: every organization with Microsoft 365 (formerly Office 365) already has Teams licensed, eliminating the procurement decision. Teams' strengths include native integration with Outlook (calendar-driven meetings appear automatically in Teams), SharePoint (file storage and collaboration), and the entire Microsoft 365 suite. Teams Rooms (video conferencing hardware certified for Teams) is the enterprise standard for conference room AV. Teams Phone (built-in telephony, replacing desk phones) is a significant enterprise feature that Slack does not offer. Teams Copilot (Microsoft 365 Copilot in Teams) provides AI-powered meeting transcription, summary, and action item extraction in real time — a technically impressive capability integrated at the OS level. Teams' main weaknesses are UX complexity (the interface is denser than Slack) and performance (the Electron-based desktop app has historically been slow to load, though the 2023 "New Teams" redesign improved this significantly).
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Key differences: Slack wins on UX quality, integration breadth, developer ecosystem, and enjoyment-of-use. Teams wins on enterprise scale, Microsoft 365 integration, meeting/phone capabilities, and zero incremental cost for Microsoft 365 organizations. For organizations already paying for Microsoft 365, choosing Slack over Teams represents a real additional spend ($87-150/user/year) for a product that does much of what Teams does.
The 2026 verdict: Teams is the rational default for any organization in the Microsoft ecosystem. Slack is the better product experience and makes sense for developer-centric companies, Salesforce-heavy organizations, or teams that prize integration depth and user experience over enterprise manageability.
Human-reviewed analysis based on primary sources including official product pages, third-party benchmarks, and consumer reviews. How we research
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