🤝 It's a Tie — Both tools are very closely matched. Your best choice depends on your specific workflow.
Feature
Microsoft Teams
Slack
Rating
No ratings
No ratings
Free Plan
Starting Price
$4/mo
$7.25/mo
Monthly Visits
300.0M
120.0M
API Support
Open Source
AI Capabilities
Mobile App
Desktop App
Browser Extension
Integrations
4 apps
7 apps
Team Size
ENTERPRISE
ENTERPRISE
Microsoft Teams Pros & Cons
Pros
- Deep, seamless integration with Microsoft 365 apps
- Included with many existing Microsoft licenses
- Strong enterprise compliance and admin tooling
Cons
- Can feel heavy and slower than lighter chat apps
- Channel/team sprawl gets messy without governance
- Best value requires being in the Microsoft ecosystem
Slack Pros & Cons
Pros
- Massive list of app integrations
- Instant voice/video huddles simplify remote touchpoints
- Powerful, granular API and bot builder settings
Cons
- Quickly becomes expensive for large enterprise counts
- Free tier message limits force data loss in histories
- Distracting and easy to miss threads if not managed properly
Microsoft Teams Key Features
- Channel-based chat
- Video meetings & webinars
- Native Office document co-authoring
- Third-party app store
- Enterprise-grade compliance controls
Slack Key Features
- Channels
- Huddles (Voice & Video)
- Canvas doc attachments
- Slack AI Summaries
- Workflow Builder