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Slack vs Microsoft Teams: Complete Comparison (2026) | Comparison

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

Cloud-based team messaging and collaboration platform with advanced search and thread-focused conversations.

Startups, tech companies, and developer teams

Score57%
VS
Microsoft Teams

Microsoft Teams

Enterprise collaboration platform integrated with Microsoft 365 suite, offering messaging, video calls, and Office app integration.

Enterprise teams using Microsoft 365

Score57%

Quick Answer

AI Summary

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.

Our Verdict

AI-assisted

Slack for startups and developers who value integrations and UX. Teams for enterprises already using Microsoft 365. Teams wins on scale; Slack wins on experience.

Community feedback

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S
Slack
6.9/10
Microsoft Teams
8.1/10
S

Choose Slack if

Startups, tech companies, and developer teams

Microsoft Teams

Choose Microsoft Teams if

Best pick

Enterprise 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)
See all 5 differences

Key Facts & Figures

141 numeric metrics compared

MetricSlackMicrosoft TeamsRatio
Daily Active Users(millions)~38 Million320 million
App Integrations(count)2,600+~700
Paid Starting Price(USD/user/mo)$7.25Included 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(integrations)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%
Base Monthly Cost Per User(USD)$8.25 (Pro plan, min 3 users)
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 Level2 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)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(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+ integrations1,000+ native 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(partners)2000+ integrations500+
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(integrations)2,300+ integrations
Paid Plan Starting Price(USD/user/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+
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
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), varies by plan
Setup Time for New Team(hours)0.5-1 hour
Max Video Conference Participants(people)100010000
Message History (Free Plan)(days)90unlimited
Voice Codec Quality Rating(score (1-10))7.58
Enterprise Security CertificationsSOC 2, HIPAA, FedRAMP, GDPRSOC 2, HIPAA, FedRAMP, GDPR, DLP, eDiscovery
Time to Deploy(days)3-71-3
Uptime Guarantee(percent)99.99%99.9%
Pro Plan Monthly Cost(USD/month)$8.75$6.50 or free with Microsoft 365
Video Conference Max Participants(participants)150300
Free Tier File Storage(GB per user)1 GB shared workspace100 GB per user
Message Search History (Free Tier)(days)90 days90 days
Annual Subscription Cost (Pro, 100 users)(USD)$10,500$7,800 or free with Microsoft 365
Desktop App Memory Usage(MB)280 MB450 MB
Monthly subscription cost (Pro plan)(USD per user)$12.50
Native third-party integrations(count)100+500+ apps
Message search response time(milliseconds)<500ms
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
Message History Searchability(months)90 days (Free/Pro), unlimited with Enterprise
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)<100ms200-300ms
File Upload Limit(GB)20GB250GB
Message History Retention (Free Tier)(days)90 daysUnlimited
G2 Ease of Use Rating (2024)(stars)4.5/54.0/5
Video Meeting Participant Limit(participants)2000300
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)4060
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)
Maximum Webinar Participants(participants)10,00010,000
Free Meeting Duration Limit(minutes)60 minutes60 minutes
Maximum Free Breakout Rooms(rooms)50 rooms50 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 hours24 hours
Free Tier Participant Limit(participants)100 participants100 participants
Gartner Meeting Solutions Rating(stars)4.5 stars4.5 stars
Gartner Review Sample Size(reviews)3,669 reviews3,669 reviews
Gartner Customer Rating(stars)4.5 stars4.5 stars
Customer Reviews Analyzed(count)3,668 reviews3,668 reviews
Video Quality Rating(%)7.9% positive7.9% positive
Maximum Meeting Participants(participants)1,000+ participants1,000+ participants
Starting Monthly Price per User(USD)$4.50$4.50
Free Meeting Duration (3+ participants)(minutes)60 minutes60 minutes
Real-Time Translation Languages(count)31 languages31 languages
Enterprise Deployment Adoption (500+ seat orgs)(percentage)67% of deployments67% of deployments
3-Year TCO Advantage for 1,000 Users with M365(percentage savings)47% lower cost47% lower cost
Base Pricing (Monthly)(USD)$7.00 (Business Basic 2026 price)$7.00 (Business Basic 2026 price)
Maximum Video Meeting Participants(participants)300+ participants300+ participants
Language Translation Support(languages)40+ languages (Teams Premium)40+ languages (Teams Premium)
Registered Users Globally(millions)350+ million monthly active users350+ million monthly active users
Monthly Active Users (MAU)(millions)320M320M
Free Plan Meeting Duration Limit(minutes)60 minutes (group calls)60 minutes (group calls)
Minimum Bandwidth for HD Video(Mbps)4.5 Mbps4.5 Mbps
Monthly Active Users (2024)(millions)320 million320 million
Starting Price (Monthly)(USD)$0 (Free) or $6 (Standard)$0 (Free) or $6 (Standard)
Maximum Video Conference Participants(participants)10,000 participants10,000 participants
Voice Latency(ms)50-100ms50-100ms
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)30fps30fps
Supported Language Captions(languages)60+ languages60+ 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 participants300 participants
Free Plan Cloud Storage(GB)5 GB (OneDrive)5 GB (OneDrive)
Breakout Rooms Maximum Count(rooms)50 breakout rooms50 breakout rooms
Global Enterprise Video Conferencing Market Share (2024)(percent)28.2%28.2%
Active Monthly Users(millions)300+ million users300+ 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(GB)2 GB per file2 GB per file
Annual TCO (1,000 users, 3-year average)(USD)$48,000-150,000$48,000-150,000

Sourced from publicly available data ·

Key Differences

5 attributes compared head-to-head

S
2Slack
Microsoft Teams leads
Microsoft Teams
3Microsoft Teams
  • 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

SSlack
Microsoft Teams
Daily Active Users(millions)
~38 Million
320 million
App Integrations(count)
2,600+
~700
Google Workspace Native Integration
Limited (requires custom setup)
Native third-party integrations(count)
100+
500+ apps
Native Microsoft 365 Integration(integration level)
API-based (basic)
Native (deep)
Microsoft 365 Integration Depth(integration level)
8+ apps (Outlook, Excel, Word, OneDrive, SharePoint, Project, Planner, Power BI)
Show 2 more attributes
Native Microsoft Office Integration
Full (Word, Excel, PowerPoint, Outlook)
Microsoft 365 Ecosystem Integration(integration depth)
Native: Word, Excel, SharePoint, OneDrive, Outlook, Power BI
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)
$8.25 (Pro plan, min 3 users)
Base Monthly Cost Per User(USD)
$7.25
Business+ Tier Monthly Cost Per User(USD)
$12.50
Show 31 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)
$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
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
Pro Plan Monthly Cost(USD/month)
$8.75
$6.50 or free with Microsoft 365
Annual Subscription Cost (Pro, 100 users)(USD)
$10,500
$7,800 or free with Microsoft 365
Monthly subscription cost (Pro plan)(USD per user)
$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
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)
$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)
Third-Party App Integrations(integrations)
2,400+
1,000+
Available Integrations(integrations)
2000+
Third-Party Integrations(partners)
2000+ integrations
500+
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 31 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
Available Integrations(count)
2,000+ integrations
1,000+ native integrations
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+
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
Message History (Free Plan)(days)
90
unlimited
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
Message History Retention (Free Tier)(days)
90 days
Unlimited
Video Meeting Participant Limit(participants)
2000
300
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
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)
Desktop App Memory Usage(MB)
280 MB
450 MB
Show 5 more attributes
Message search response time(milliseconds)
<500ms
Message Delivery Latency(milliseconds)
<100ms
200-300ms
Minimum Bandwidth for HD Video(Mbps)
4.5 Mbps
Voice Latency(ms)
50-100ms
Screen Sharing Maximum FPS(fps)
30fps
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
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
Third-Party Integrations Available(integrations)
2,300+ integrations
Built-in Task Management(features)
No: messaging-only, requires integrations
Message History Searchability(months)
90 days (Free/Pro), unlimited with Enterprise
Third-party Integrations(integrations)
2000+
Native Integrations(count)
2,300+
Pre-Built Integrations(count)
2,400+ integrations
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)
Show 1 more attribute
AI Assistant Integration
Copilot with GPT-4, speech-to-text, real-time translation
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 4 more attributes
File Upload Limit(GB)
20GB
250GB
File Storage Per User(GB)
100 (workspace)
1000 (1TB OneDrive)
Meeting Recording Retention (Free)(days)
Unlimited (OneDrive)
Free Plan Cloud Storage(GB)
5 GB (OneDrive)
Open Source
No, proprietary
Maximum Video Length (Free Tier)(minutes)
N/A
Maximum Video Resolution(pixels)
Requires 3rd party
1080p (1920x1080)
Native Integrations Available(count)
2200+
1000+
Enterprise app marketplace size(applications)
2,000+ apps (Slack App Directory)
Free Tier Message History Retention(days)
90 days
Enterprise Uptime SLA(percent)
99.99%
Uptime SLA Guarantee(%)
99.99%
Uptime 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)
Free Plan Message History(months)
90 days
FedRAMP Authorization(boolean)
No
HIPAA Compliance Certified
Yes (Business+ plan required)
Yes
Data Residency Control
Microsoft-managed regional datacenters (limited control)
SOC 2 Type II Certified
Yes
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+
Global Active Users(millions)
750+ million messages daily across 750k+ organizations
Registered Users Globally(millions)
350+ million monthly active users
Monthly Active Users (MAU)(millions)
320M
Active Monthly Users(millions)
300+ million users
Threading Model
Channel-based threads (contextual loss in active channels)
Deployment Options
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)
Self-Hosted Deployment Option
Cloud-only SaaS
Paid Workspaces/Users (Enterprise Adoption)(workspaces)
750,000+ paid workspaces
Active Global Workspaces/Deployments(count)
750,000+ active workspaces
Source Code Availability
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(hours to proficiency)
2
5
Monthly Active Users(users)
0.75 million
360 million
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)
Maximum video call participants (free tier)(people)
100 participants
Free Group Video Call Duration Limit(minutes)
40
60
Maximum Video Conference Participants (Free)(people)
Limited (typically 3-4)
100
Message Search Capability(text)
Full-text indexed across all messages
Basic keyword search (limited free tier)
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
Maximum Participants (Standard Meeting)(people)
300 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)
Maximum Video Sharing Quality(fps at resolution)
4K at 30fps
Enterprise Deployment Adoption (500+ seat orgs)(percentage)
67% of deployments
Global Enterprise Video Conferencing Market Share (2024)(percent)
28.2%
3-Year TCO Advantage for 1,000 Users with M365(percentage savings)
47% lower cost
Video Resolution Support(maximum resolution)
4K (3840x2160)
User Learning Curve(difficulty rating)
Steep (enterprise-focused interface)
Supported Operating Systems(platforms)
Windows, Mac, iOS, Android, Web
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)
Maximum File Upload Size(GB)
2 GB per file
Open-Source Availability
Proprietary closed-source
Annual TCO (1,000 users, 3-year average)(USD)
$48,000-150,000

Pros & Cons

8 pros·6 cons across both

S
Microsoft Teams
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

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

3 questions

  1. Microsoft Teams is bundled with Microsoft 365, which is used by 300M+ business users globally. Slack grew organically without this distribution advantage.

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