Microsoft Teams vs Slack
The ultimate side-by-side head-to-head analysis for 2026.
Short answer
- Price: Microsoft Teams is cheaper — $6/user/mo vs $7/user/mo.
- How to start: Microsoft Teams is from $6/user/mo, Slack is from $7/user/mo.
These lines are generated from the pricing we track, not from a paid placement. We do not publish a quality score, because we do not have one we can stand behind. They cannot tell you which tool fits your workflow — the sections below are there for that. How we score tools.
Microsoft Teams
Slack
Category
Communication
Communication
Base Price
$6/user/mo
$7/user/mo
Public API
Yes
Yes
Mobile app
Yes
Yes
Open source / self-hostable
No
No
SSO (SAML)
Yes
Yes
Choose Microsoft Teams if:
Large Corporations and IT Managers.
Choose Slack if:
Tech Teams, Remote Workers, and Large Corporate Enterprises.
Microsoft Teams: pros & cons
- Office 365 Integration: Edit files collaboratively within the app in real-time.
- Enterprise Security: A world leader in data protection and administrative controls.
- Large Meeting Capacity: Host massive live events and webinars for thousands of attendees.
- Included with Office: Available for free with most business Microsoft 365 licenses.
- Performance Issues: The app can feel heavy and sometimes sluggish on older hardware.
- Complex UI: Navigating the channel structure can be confusing for non-technical users.
- Guest Access: Adding external users outside the organization can sometimes be difficult.
Slack: pros & cons
- Powerful Search: Find any file or message from years ago in a matter of seconds.
- Flexible Channels: Organize work by project, team, or even interests to maintain focus.
- Extensive API: Easily build and integrate your own bots and custom workflows.
- High Reliability: Desktop and mobile apps are exceptionally fast and stable.
- Notification Fatigue: Can be highly distracting if not properly configured by the user.
- Free Plan Limits: Access to message history is restricted on the free tier.
- Enterprise Pricing: Per-user licensing costs can add up quickly for large organizations.
Our verdict on Microsoft Teams
The most secure and integrated collaboration platform for teams using Microsoft 365.
Our verdict on Slack
An indispensable tool for moving team communication away from email and into a faster era.