Slack vs Microsoft Teams (2026): Which Is Better for Your Team?
Slack is the better standalone communication tool with superior integrations and UX. Teams wins when your organization already pays for Microsoft 365, making it effectively free.
You want the best communication experience, use diverse tools beyond Microsoft, or your team relies heavily on integrations with third-party services.
Your organization uses Microsoft 365 and you want communication, video, file sharing, and collaboration in one platform at no additional cost.
Key Takeaways
- Slack has 2,600+ integrations, the largest in team communication.
- Teams is included free with Microsoft 365 Business ($6+/user/month).
- Slack AI ($10/user/month) summarizes channels and answers questions. Teams Copilot is included with Microsoft 365 Copilot ($30/user/month).
- Slack is rated higher for user experience and third-party integrations.
- Teams has better video conferencing and is catching up on messaging features.
| Feature | Slack | Microsoft Teams |
|---|---|---|
| Standalone pricing | $7.25/user/mo (Pro) | $4/user/mo (Essentials) |
| Bundled pricing | N/A | Free with Microsoft 365 |
| AI assistant | Slack AI ($10/user) | Copilot ($30/user/mo, Microsoft 365) |
| Integrations | 2,600+ | 700+ (plus all Microsoft apps) |
| Video conferencing | Huddles (basic) | Full meetings (advanced) |
| File storage | 10GB/user | 1TB/user (with Microsoft 365) |
| Channels/organization | Excellent (threaded) | Good (improving) |
| User experience | Rated higher (G2, Capterra) | Functional, improving |
| Best for | Diverse tool stacks, developer teams | Microsoft 365 organizations |
Where Slack Wins
Integration ecosystem
Slack connects to 2,600+ tools, far more than Teams. If your workflow includes Salesforce, HubSpot, Jira, GitHub, Figma, or dozens of other tools, Slack integrations are deeper and more reliable.
Channel organization and threading
Slack threading, channel organization, and search are more refined. Finding old conversations, managing notifications, and organizing channels by project or team is more intuitive. Teams has improved but Slack remains the UX benchmark.
Where Microsoft Teams Wins
Cost with Microsoft 365
If you already pay for Microsoft 365, Teams is included at no extra cost. Slack at $7.25/user/month on top of Microsoft licensing is a hard sell for budget-conscious organizations. For a 50-person team, that is $4,350/year saved.
Video conferencing
Teams video meetings are more feature-rich: breakout rooms, meeting recordings, live transcription, whiteboard, and large meeting support (up to 1,000 participants). Slack Huddles are lightweight but limited for formal meetings.
Pricing Comparison
| Tier | Slack | Microsoft Teams |
|---|---|---|
| Free | Limited history, 1:1 calls | With Microsoft 365 |
| Pro | $7.25/user/mo | $4/user/mo (Essentials) |
| Business | $12.50/user/mo | Included in Microsoft 365 Business |
| Enterprise | Custom | Included in Microsoft 365 E3/E5 |
AdAI Recommendation
Choose Slack if...
You use diverse tools beyond Microsoft, value the best integration ecosystem and user experience, or your team is developer/tech-heavy and uses Slack-first workflows.
Choose Microsoft Teams if...
Your organization uses Microsoft 365 and wants to consolidate communication, video, and file sharing into one platform without additional per-user costs.
The bottom line
If you already pay for Microsoft 365, start with Teams. The cost savings are significant. If you need best-in-class integrations and UX, Slack is worth the premium.