Microsoft Teams vs Slack
Compare Microsoft Teams and Slack on features, pricing, and buyer fit using the same researched criteria.
Microsoft Teams
M365 collaboration hub (chat, meetings, files) with optional Teams Phone telephony add-on — free Teams tier exists; Phone Standard ~$10/user/month annual plus PSTN.
Best for
- • Organisations standardised on Microsoft 365
- • Buyers who need chat + meetings + files under one identity plane
Starting from $0.00/user/mo
Free plan available
VS
Our verdict
Depends — no universal winner. This is a collaboration comparison, not a phone shootout. Slack wins for channel-first tech/product team messaging culture; Microsoft Teams wins as the M365 collaboration hub (chat, meetings, files, identity). Buy phone separately (or Teams Phone) if PSTN is required.
Microsoft Teams is better for
- ✓ Number / country coverage
- ✓ Routing & IVR
Tie
- • Power dialer
- • WhatsApp Business
- • CRM / CTI integrations
Choose Microsoft Teams if: Organisations standardised on Microsoft 365
Choose Slack if: Tech and product orgs standardising on channel-based team messaging
Slack
Channel-based team messaging platform — Free $0, Pro $7.25/user/month annual, Business+ $15, Enterprise+ contact sales; huddles for light video, not a phone system.
Best for
- • Tech and product orgs standardising on channel-based team messaging
- • Teams that want Slack Connect and a deep app directory
Starting from $7.25/user/mo
Free plan available
Evidence & transparency
Sources and research process behind this comparison.
Sources
8
Criteria
9
Screenshots
9
Sources consulted
| Title | Product | Type |
|---|---|---|
| Microsoft Teams — Official Site | Microsoft Teams | official-product-page |
| Microsoft Teams Pricing | Microsoft Teams | official-pricing-page |
| Microsoft Teams Phone | Microsoft Teams | official-product-page |
| Compare Microsoft Teams options | Microsoft Teams | official-product-page |
| Slack — Official Site | Slack | official-product-page |
| Slack Pricing | Slack | official-pricing-page |
| Slack Pricing | Slack | official-product-page |
| Slack AI | Slack | official-product-page |
Methodology steps
- 1Collect first-party product and pricing evidence
- 2Map both products to the same category criteria
- 3Record criterion outcomes with confidence and sources
- 4Publish only when editorial gates allow indexing
Methodology version 1.0.0.
Affiliate relationships never change comparison outcomes. We evaluate both products on the same criteria and allow ties when evidence does not support a universal winner.
Read full methodology →Some visit links may be affiliate links — we may earn a commission at no extra cost to you. Comparison outcomes are never based on commission.