software
Slack vs Microsoft Teams
Slack 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.
S
Slack
Premium team communication platform designed for enterprise workflows and integrations.
Startups, tech companies, and developer teams
Score57%
VS
Microsoft Teams
Unified workplace collaboration platform integrating chat, meetings, and Office 365 applications
Enterprise teams using Microsoft 365
Score57%
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.
Our Verdict
AI-assistedSlack 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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S
Slack
7.4/10
vs
👑Microsoft Teams
7.6/10
S
Choose Slack if
Startups, tech companies, and developer teams
★
Choose Microsoft Teams if
👑 Best pickEnterprise teams using Microsoft 365
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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
99 numeric metrics compared
| Metric | Slack | Microsoft Teams | Ratio |
|---|---|---|---|
| Daily Active Users(millions) | ~38 Million | 320 million | -88% |
| App Integrations(count) | 2,600+ | ~700 | +271% |
| 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) | +21% |
| Annual Cost per User (Pro Tier)(USD) | $87 (billed yearly) | $72 (bundled pricing) | +21% |
| Third-Party App Integrations(integrations) | 2,000+ | 800+ | +150% |
| Video Meeting Capacity(participants) | Up to 2,000 (with paid plan) | Up to 10,000 | -80% |
| Mobile App Feature Parity(%) | 95% | 85% | +12% |
| Base Monthly Cost Per User(USD) | $8 | — | — |
| 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(count) | 2,200+ | — | — |
| Pro Plan Annual Cost(USD) | $150 (billed monthly) | — | — |
| Free Tier Message History Retention(days) | 90 days | — | — |
| AI Transcription Languages Supported(languages) | 0 (not native feature) | — | — |
| Enterprise Uptime SLA(percent) | 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 | — | — |
| Available Integrations(count) | 2,000+ integrations | — | — |
| Monthly Cost (Pro Plan)(USD) | $12.50 per user/month | — | — |
| Free Message History(days) | 90 days maximum | — | — |
| Voice Audio Codec Quality(kHz) | 16 kHz | — | — |
| Third-Party Integrations(count) | 2000+ | 500+ | +300% |
| 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 | — | — |
| Third-Party Integrations Available(count) | 2,300+ integrations | — | — |
| Paid Plan Starting Price(USD/user/month) | $7.25 | $6 | +21% |
| Cloud Storage (Base Plan)(GB) | 10 GB | — | — |
| Monthly Cost Per User(USD) | $8-12.50 (Pro/Business+) | — | — |
| Active Workspaces(workspaces) | 750,000+ | — | — |
| Native Integrations(count) | 2,300+ | — | — |
| 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 | — | — |
| Message History Retention (Free Plan)(days) | 90 days (10,000 message limit) | — | — |
| 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(%) | 99.99% | — | — |
| 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); unlimited (paid plan) | — | — |
| Setup Time for New Team(hours) | 0.5-1 hour | — | — |
| Max Video Conference Participants(people) | 1000 | 10000 | -90% |
| Message History (Free Plan)(days) | 90 | unlimited | — |
| Voice Codec Quality Rating(score (1-10)) | 7.5 | 8 | -6% |
| Enterprise Security Certifications(count) | SOC 2, HIPAA, FedRAMP, GDPR | SOC 2, HIPAA, FedRAMP, GDPR, DLP, eDiscovery | -33% |
| Time to Deploy(days) | 3-7 | 1-3 | +150% |
| Uptime Guarantee(percentage) | 99.99% | 99.9% | |
| Maximum Webinar Participants(participants) | 10,000 | 10,000 | |
| Free Meeting Duration Limit(minutes) | 60 minutes | 60 minutes | |
| 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 | |
| Maximum Meeting Participants(participants) | 1,000+ participants | 1,000+ participants | |
| 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 | |
| Free Plan Meeting Duration Limit(minutes) | 60 minutes (group calls) | 60 minutes (group calls) | |
| Pro Plan Monthly Cost(USD) | $6-16 (varies by region/bundle) | $6-16 (varies by region/bundle) | |
| 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 per user) | $0 (Free) or $6 (Standard) | $0 (Free) or $6 (Standard) | |
| Native Third-Party Integrations(count) | 500+ apps | 500+ apps | |
| Maximum Video Conference Participants(participants) | 10,000 participants | 10,000 participants |
Sourced from publicly available data · Jun 2026
Key Differences
5 attributes compared head-to-head
S
2SlackMicrosoft Teams leads
40%60%
Slack
Attribute
Microsoft Teams
~38M
Daily Active Users
320M+🏆
Excellent🏆
Interface Quality
Moderate
Good
Video Calling
Excellent🏆
$7.25+/user/mo
Price
Included in M365🏆
Superior🏆
Developer Integrations
Good
Daily Active Users
Slack
~38M
Microsoft Teams
320M+🏆
Interface Quality
Slack
Excellent🏆
Microsoft Teams
Moderate
Video Calling
Slack
Good
Microsoft Teams
Excellent🏆
Price
Slack
$7.25+/user/mo
Microsoft Teams
Included in M365🏆
Developer Integrations
Slack
Superior🏆
Microsoft Teams
Good
Full Comparison
| Attribute | Slack | Microsoft Teams |
|---|---|---|
| Daily Active Users(millions) | ~38 Million | 320 million |
| Monthly Active Users(millions) | ~750 (registered) | ~380 |
| App Integrations(count) | 2,600+ | ~700 |
| Google Workspace Native Integration | Limited (requires custom setup) | — |
| Native Microsoft Office Integration | Full (Word, Excel, PowerPoint, Outlook) | — |
| 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) |
| Base Monthly Cost Per User(USD) | $8 | — |
| Base Monthly Cost Per User(USD) | $7.25 | — |
| Business+ Tier Monthly Cost Per User(USD) | $12.50 | — |
Show 22 more attributesPrice 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) — Pro Plan Monthly Cost (Annual Billing)(USD per user) $8.75 — Monthly Cost (Pro Plan)(USD) $12.50 per user/month — Enterprise Plan Monthly Cost Per User(USD) $12.50 — Paid Plan Starting Price(USD/user/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 — 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) — Free Plan Meeting Duration Limit(minutes) 60 minutes (group calls) — Starting Price (Monthly)(USD per user) $0 (Free) or $6 (Standard) — | ||
| Third-Party App Integrations(integrations) | 2,000+ | 800+ |
| Available Integrations(integrations) | 2000+ | — |
| Third-Party Integrations(count) | 2000+ | 500+ |
| Third-Party Integrations Available(count) | 2,300+ integrations | — |
| Pre-built Integrations(count) | 2,400+ integrations | — |
Show 1 more attributeNative Third-Party Integrations(count) 500+ apps — | ||
| 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) |
| 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 | — |
Show 26 more attributesMeeting 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 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 — Native Integrations(count) 2,300+ — Message History Searchable(years) 10 years standard — Workflow Automation Steps(built-in steps) 50+ — 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) — File Storage Included(GB) 5GB (free); unlimited (paid plan) — Max Video Conference Participants(people) 1000 10000 Message History (Free Plan)(days) 90 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 — AI Assistant Integration(capability) Copilot with GPT-4, speech-to-text, real-time translation — | ||
| Message Search Speed(seconds) | Excellent - optimized search indexing | Good - improving with Copilot enhancements |
| 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) | — |
| Minimum Bandwidth for HD Video(Mbps) | 4.5 Mbps | — |
| Mobile App Feature Parity(%) | 95% | 85% |
| Mobile App Type | Native iOS/Android with feature-parity | — |
| 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) | — |
| Deployment Options | Cloud-based SaaS only | — |
| GDPR & Data Sovereignty Compliance | Compliant but data on Salesforce servers | — |
| End-to-End Encryption Available | DMs only, Enterprise+ plan | — |
| End-to-End Encryption Default | Not available | — |
| Enterprise Security Certifications(count) | SOC 2, HIPAA, FedRAMP, GDPR | SOC 2, HIPAA, FedRAMP, GDPR, DLP, eDiscovery |
| Enterprise Security Compliance(certifications) | ISO 27001, SOC 2, HIPAA, GDPR | — |
| Maximum Meeting Participants(participants) | Unlimited group chats | — |
| Available Integrations(count) | 2,000+ integrations | — |
| Third-party Integrations(integrations) | 2000+ | — |
| Native Integrations Available(count) | 2,200+ | — |
| Microsoft 365 Integration Depth(Apps Integrated) | 8+ apps (Outlook, Excel, Word, OneDrive, SharePoint, Project, Planner, Power BI) | — |
| 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 Translation Languages (2026)(languages) | Limited translation features | — |
| AI Meeting Assistant Cost(USD/month) | Copilot Pro required ($20+ per tenant) | — |
| Workflow Automation Complexity | Advanced with conditional logic | — |
| Storage Per User (Standard Plan)(GB) | Variable by plan | — |
| Cloud Storage (Base Plan)(GB) | 10 GB | — |
| Meeting Recording Retention (Free)(days) | Unlimited (OneDrive) | — |
| Open Source | No, proprietary | — |
| Maximum Video Length (Free Tier)(minutes) | N/A | — |
| Maximum Video Resolution(pixels) | Requires 3rd party | 1080p @ 30fps |
| Maximum Video Sharing Quality(fps at resolution) | 4K at 30fps | — |
| Free Tier Message History Retention(days) | 90 days | — |
| Message History Retention (Free Plan)(days) | 90 days (10,000 message limit) | — |
| Enterprise Uptime SLA(percent) | 99.99% | — |
| Uptime SLA Guarantee(%) | 99.99% | — |
| Uptime Guarantee(percentage) | 99.99% | 99.9% |
| 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) | — |
| Free Plan Message History(months) | 90 days | — |
| Pro Plan Monthly Cost(USD) | $6-16 (varies by region/bundle) | — |
| FedRAMP Authorization(availability) | No | — |
| Data Residency Control | Microsoft-managed regional datacenters (limited control) | — |
| SOC 2 Type II Certified | Yes | — |
| HIPAA Compliance Certified | Yes (Business+ plan required) | — |
| Custom Workflow Automation | Advanced (Workflow Builder, automations) | — |
| Users Per Workspace(count) | Unlimited | — |
| Maximum Webinar Participants(participants) | 10,000 | — |
| Maximum Meeting Participants(participants) | 1,000+ participants | — |
| Total Registered Users(millions) | 750 million | — |
| Daily Posts Published (Organic)(millions) | N/A | — |
| Active Workspaces(workspaces) | 750,000+ | — |
| Registered Users Globally(millions) | 350+ million monthly active users | — |
| Monthly Active Users (MAU)(millions) | 320M | — |
| Threading Model | Channel-based threads (contextual loss in active channels) | — |
| Deployment Options(count) | Cloud-only (SaaS) | — |
| Open Source | Proprietary (closed-source) | — |
| Native Video/Audio Calls | Yes (Slack Huddles) | — |
| Native App Integrations Available(count) | 2,400+ apps | — |
| Self-Hosting Capability | No, cloud-only | — |
| Self-Hosted/On-Premises Option | No (cloud-only) | — |
| Paid Workspaces/Users (Enterprise Adoption)(workspaces) | 750,000+ paid workspaces | — |
| Active Global Workspaces/Deployments(count) | 750,000+ active workspaces | — |
| Source Code Availability(null) | Proprietary/closed | Proprietary (closed-source) |
| Setup Time for New Team(hours) | 0.5-1 hour | — |
| Voice Codec Quality Rating(score (1-10)) | 7.5 | 8 |
| Voice Chat Quality Rating(subjective score) | Excellent (optimized for reliability) | — |
| Time to Deploy(days) | 3-7 | 1-3 |
| Learning Curve(1-10 scale (1=easiest)) | 2 | 5 |
| User Learning Curve(difficulty rating) | Steep (enterprise-focused interface) | — |
| Free Cloud Recording Capability | No, paid only | — |
| Free Meeting Duration Limit(minutes) | 60 minutes | — |
| Office 365 Native Integration | Full native integration | — |
| Browser Join Without App | Often requires app/account | — |
| Maximum Free Breakout Rooms(rooms) | 50 rooms | — |
| Free Tier Participant Limit(participants) | 100 participants | — |
| 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 | — |
| 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) | — |
| Enterprise Deployment Adoption (500+ seat orgs)(percentage) | 67% of deployments | — |
| 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 | — |
| Monthly Active Users (2024)(millions) | 320 million | — |
SSlack
Microsoft TeamsDaily Active Users(millions)
~38 Million
320 million
Monthly Active Users(millions)
~750 (registered)
~380
App Integrations(count)
2,600+
~700
Google Workspace Native Integration
Limited (requires custom setup)
—
Native Microsoft Office Integration
Full (Word, Excel, PowerPoint, Outlook)
—
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)
Base Monthly Cost Per User(USD)
$8
—
Base Monthly Cost Per User(USD)
$7.25
—
Business+ Tier Monthly Cost Per User(USD)
$12.50
—
Show 22 more attributes
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)
—
Pro Plan Monthly Cost (Annual Billing)(USD per user)
$8.75
—
Monthly Cost (Pro Plan)(USD)
$12.50 per user/month
—
Enterprise Plan Monthly Cost Per User(USD)
$12.50
—
Paid Plan Starting Price(USD/user/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
—
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)
—
Free Plan Meeting Duration Limit(minutes)
60 minutes (group calls)
—
Starting Price (Monthly)(USD per user)
$0 (Free) or $6 (Standard)
—
Third-Party App Integrations(integrations)
2,000+
800+
Available Integrations(integrations)
2000+
—
Third-Party Integrations(count)
2000+
500+
Third-Party Integrations Available(count)
2,300+ integrations
—
Pre-built Integrations(count)
2,400+ integrations
—
Show 1 more attribute
Native Third-Party Integrations(count)
500+ apps
—
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)
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
—
Show 26 more attributes
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 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
—
Native Integrations(count)
2,300+
—
Message History Searchable(years)
10 years standard
—
Workflow Automation Steps(built-in steps)
50+
—
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)
—
File Storage Included(GB)
5GB (free); unlimited (paid plan)
—
Max Video Conference Participants(people)
1000
10000
Message History (Free Plan)(days)
90
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
—
AI Assistant Integration(capability)
Copilot with GPT-4, speech-to-text, real-time translation
—
Message Search Speed(seconds)
Excellent - optimized search indexing
Good - improving with Copilot enhancements
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)
—
Minimum Bandwidth for HD Video(Mbps)
4.5 Mbps
—
Mobile App Feature Parity(%)
95%
85%
Mobile App Type
Native iOS/Android with feature-parity
—
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)
—
Deployment Options
Cloud-based SaaS only
—
GDPR & Data Sovereignty Compliance
Compliant but data on Salesforce servers
—
End-to-End Encryption Available
DMs only, Enterprise+ plan
—
End-to-End Encryption Default
Not available
—
Enterprise Security Certifications(count)
SOC 2, HIPAA, FedRAMP, GDPR
SOC 2, HIPAA, FedRAMP, GDPR, DLP, eDiscovery
Enterprise Security Compliance(certifications)
ISO 27001, SOC 2, HIPAA, GDPR
—
Maximum Meeting Participants(participants)
Unlimited group chats
—
Available Integrations(count)
2,000+ integrations
—
Third-party Integrations(integrations)
2000+
—
Native Integrations Available(count)
2,200+
—
Microsoft 365 Integration Depth(Apps Integrated)
8+ apps (Outlook, Excel, Word, OneDrive, SharePoint, Project, Planner, Power BI)
—
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 Translation Languages (2026)(languages)
Limited translation features
—
AI Meeting Assistant Cost(USD/month)
Copilot Pro required ($20+ per tenant)
—
Workflow Automation Complexity
Advanced with conditional logic
—
Storage Per User (Standard Plan)(GB)
Variable by plan
—
Cloud Storage (Base Plan)(GB)
10 GB
—
Meeting Recording Retention (Free)(days)
Unlimited (OneDrive)
—
Open Source
No, proprietary
—
Maximum Video Length (Free Tier)(minutes)
N/A
—
Maximum Video Resolution(pixels)
Requires 3rd party
1080p @ 30fps
Maximum Video Sharing Quality(fps at resolution)
4K at 30fps
—
Free Tier Message History Retention(days)
90 days
—
Message History Retention (Free Plan)(days)
90 days (10,000 message limit)
—
Enterprise Uptime SLA(percent)
99.99%
—
Uptime SLA Guarantee(%)
99.99%
—
Uptime Guarantee(percentage)
99.99%
99.9%
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)
—
Free Plan Message History(months)
90 days
—
Pro Plan Monthly Cost(USD)
$6-16 (varies by region/bundle)
—
FedRAMP Authorization(availability)
No
—
Data Residency Control
Microsoft-managed regional datacenters (limited control)
—
SOC 2 Type II Certified
Yes
—
HIPAA Compliance Certified
Yes (Business+ plan required)
—
Custom Workflow Automation
Advanced (Workflow Builder, automations)
—
Users Per Workspace(count)
Unlimited
—
Maximum Webinar Participants(participants)
10,000
—
Maximum Meeting Participants(participants)
1,000+ participants
—
Total Registered Users(millions)
750 million
—
Daily Posts Published (Organic)(millions)
N/A
—
Active Workspaces(workspaces)
750,000+
—
Registered Users Globally(millions)
350+ million monthly active users
—
Monthly Active Users (MAU)(millions)
320M
—
Threading Model
Channel-based threads (contextual loss in active channels)
—
Deployment Options(count)
Cloud-only (SaaS)
—
Open Source
Proprietary (closed-source)
—
Native Video/Audio Calls
Yes (Slack Huddles)
—
Native App Integrations Available(count)
2,400+ apps
—
Self-Hosting Capability
No, cloud-only
—
Self-Hosted/On-Premises Option
No (cloud-only)
—
Paid Workspaces/Users (Enterprise Adoption)(workspaces)
750,000+ paid workspaces
—
Active Global Workspaces/Deployments(count)
750,000+ active workspaces
—
Source Code Availability(null)
Proprietary/closed
Proprietary (closed-source)
Setup Time for New Team(hours)
0.5-1 hour
—
Voice Codec Quality Rating(score (1-10))
7.5
8
Voice Chat Quality Rating(subjective score)
Excellent (optimized for reliability)
—
Time to Deploy(days)
3-7
1-3
Learning Curve(1-10 scale (1=easiest))
2
5
User Learning Curve(difficulty rating)
Steep (enterprise-focused interface)
—
Free Cloud Recording Capability
No, paid only
—
Free Meeting Duration Limit(minutes)
60 minutes
—
Office 365 Native Integration
Full native integration
—
Browser Join Without App
Often requires app/account
—
Maximum Free Breakout Rooms(rooms)
50 rooms
—
Free Tier Participant Limit(participants)
100 participants
—
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
—
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)
—
Enterprise Deployment Adoption (500+ seat orgs)(percentage)
67% of deployments
—
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
—
Monthly Active Users (2024)(millions)
320 million
—
Visual Comparison
Side-by-side comparison of numeric attributes
Pros & Cons
8 pros·6 cons across both
S
S
Slack
+4-3
57% positive
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
57% positive
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
2 questions
Microsoft Teams is bundled with Microsoft 365, which is used by 300M+ business users globally. Slack grew organically without this distribution advantage.
Both are excellent. Slack edges out Teams for UX and integrations; Teams wins for video meetings and organizations already using Office.
Resources & Learn More
Dive deeper with these curated resources
Where to Buy
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Wikipedia
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Last updated: June 12, 2026Human reviewed