Try or ByeTry or Bye

Microsoft TeamsvsSlack

Saas
vs
Saas58

Score Comparison

55
Overall
58
50
Pricing
42
55
Usability
70
40
Performance
55
60
Support
45
60
Reliability
62
50
Onboarding
75
65
Mobile
55
85
Security
55
80
Integrations
90
Microsoft TeamsSlack

Signals Comparison

Performance

Microsoft Teams

  • Extremely high RAM usage even when idle(9/10)

Slack

  • Why is Slack using so much memory?(6/10)
Pricing

Microsoft Teams

  • Unbundling from M365 is a disguised price hike(8/10)
  • Add-ons like Teams Premium and Copilot add significant costs(7/10)
  • Free plan now limits group calls to 60 minutes(6/10)

Slack

  • Free plan deletes messages after 90 days, permanently after 1 year(9/10)
  • Enterprise Grid is effectively a one-way upgrade(8/10)
  • Slack raised Business+ price 20% in 2025 (now $15/user)(7/10)
  • Best Slack AI features locked behind Business+(6/10)
Usability

Microsoft Teams

  • Notifications are unreliable and chaotic(8/10)
  • File search and navigation is frustrating(7/10)
  • Interface is unintuitive and overcomplicated(6/10)
  • Forced migration from Skype caused friction(5/10)

Slack

  • Notification overload destroys focus and productivity(8/10)
  • Slack search can't find old messages(7/10)
  • Slack threads get lost and conversations become chaotic(6/10)
Integrations

Microsoft Teams

  • Mac and non-Windows platforms are second-class citizens(8/10)

Slack

No signals

Reliability

Microsoft Teams

  • Sync issues between Teams, Outlook, and OneDrive(7/10)

Slack

  • Slack outages: messages not sending and Slack not loading(8/10)
  • Slack notifications not working or delayed(6/10)
Support

Microsoft Teams

No signals

Slack

  • Customer support is slow and stringent with bureaucratic policies(7/10)
Security

Microsoft Teams

No signals

Slack

  • Is Slack secure? No end-to-end encryption(8/10)

Pricing Comparison

Microsoft Teams

Free
Free

Users: Unlimited users

Storage: 5GB per user

Limits: 60-minute group call limit, No phone system, No admin tools, 5GB storage cap

60-minute limit on group meetings added in 2025. No admin controls. Limited app integrations.
Essentials
$4/mo

Users: Up to 300 users

Storage: 10GB per user

Limits: No Office apps, No business email, No SharePoint

No Office apps included. No email hosting. Admin features limited.
Business Basic
Popular
$6/mo

Users: Up to 300 users

Storage: 1TB per user

Limits: No desktop Office apps, No advanced security, Copilot $30/user extra

Only web/mobile Office apps - no desktop apps. Teams Premium and Copilot cost extra.
Business Standard
Popular
$12.5/mo

Users: Up to 300 users

Storage: 1TB per user

Limits: 300 webinar limit, No advanced security features

Webinars limited to 300 attendees. Teams Premium ($10/user) for advanced meetings.
Business Premium
$22/mo

Users: Up to 300 users

Storage: 1TB per user

Limits: Phone system not included, Limited to 300 users

Still need Teams Phone separately ($15-20/user). Copilot is $30/user extra.
Enterprise (Teams add-on)
$5.25/mo

Users: Unlimited

Storage: Varies by M365 plan

Limits: Not standalone - requires Enterprise M365 license

This is ON TOP of E1/E3/E5 costs. Teams Premium ($10/user), Copilot ($30/user), Teams Phone ($20/user) all extra.

Slack

Free
Free

Limits: No group huddles, 10-app limit, no SSO, no unlimited history

Messages and files older than 90 days are hidden; data older than 1 year is permanently deleted (since Aug 26, 2024) and cannot be recovered by upgrading
Pro
Popular
$7.25/yr

Limits: Slackbot only as a trial; no AI recaps/translations; per Slack's help center, SSO/SCIM on Pro require a connected Salesforce org

$8.75/user/month if billed monthly; billed per active member; advanced AI and full Slackbot require Business+
Business+
$15/yr

Limits: No enterprise search, no EKM, single workspace

$18/user/month billed monthly; raised from $12.50/$15 in June 2025; turning AI off does not reduce the price; extra Slackbot usage via Flex Credits
Enterprise+
$45/yr

Limits: Annual contract; licensing guides describe no downgrade path after an Enterprise Grid migration

Annual billing only via sales; Enterprise Key Management and frontline add-ons priced separately

Feature Comparison

FeatureMicrosoft TeamsSlack
Communication
Team chat and channels

Core feature, search less capable than Slack

Real-time messaging

Channels, DMs, threads

Video calls

Huddles: 1:1 on Free, group huddles on paid plans

Phone system

Teams Phone add-on required, $15-20/user extra

Meetings
Video conferencing

Up to 300 participants on business plans

Screen sharing

With annotation and control options

Data
Message history

Free: 90 days visible, 1 year then deleted. Paid: Unlimited

Data export

Business+ and above for compliance exports

Productivity
Office app integration

Edit Word/Excel/PPT directly in Teams

Outlook calendar integration

Sync can have issues

Integrations
Third-party integrations

2,600+ apps. Free plan limited to 10 apps

Third-party app integrations

Fewer than Slack (2,600+ apps)

Storage
SharePoint file storage

Can make finding files confusing

OneDrive sync

1TB per user on Business plans

Security
SSO/SAML

Listed on Pro and above (Pro requires a connected Salesforce org)

End-to-end encryption

1:1 calls only by default

Compliance certifications

HIPAA, SOC 2, ISO 27001, etc.

AI
Slack AI

Basic AI on Free/Pro; advanced AI and Slackbot on Business+ and up. Standalone add-on discontinued in 2025

AI assistant (Copilot)

$30/user/month add-on

Collaboration
Guest access

More complex than competitors

Accessibility
Mobile app

iOS and Android, notification reliability issues

Enterprise
Audit logs

Enterprise plans

Events
Webinars

Business Standard+ or Teams Premium

Compliance
HIPAA compliance

Enterprise+ only

FedRAMP authorized

Moderate authorization available

Compatibility
Cross-platform apps

Mac experience significantly worse than Windows