Microsoft Teams vs Slack

Pick up to 4 tools and see their free plans, entry prices, platforms and limits in one table. Every fact comes from each vendor's own pages, checked 7 November 2026.

Compared on	Microsoft Teams From $4/user/mo Visit Remove	Slack Free plan · from $7.25/user/mo Visit Remove
What it is	Chat, meetings and calling, sold alone or inside Microsoft 365	Team messaging built around channels, with huddles, canvases and workflow automation
Free plan	No	Free plan keeps 90 days of message history, allows up to 10 app integrations, and limits huddles and Slack Connect external messages to 1:1
Cheapest paid plan	$4/user/mo billed annually (Teams Essentials)Microsoft Teams pricing	$7.25/user/mo billed annually (Pro)Slack pricing
What it covers	Paid yearly; annual subscription that auto-renews.	List prices. Slack also lists a 50% promotional price for the first 3 months on monthly Pro billing for teams that buy online within 7 days of creating the workspace. Members active in a 28-day period are billed.
Free trial	Free trials offered on the business plans (trial terms on Microsoft's page)	None stated
Platforms	Web	Web, Windows, Mac, iOS, Android
Integrations (vendor's figure)	Not stated	Over 2,600 apps in the Slack Marketplace
Open source	No	No
Good for	Businesses already using Microsoft 365 and Outlook Small teams that want chat and meetings in one inexpensive plan Companies replacing a desk phone system with cloud calling	Teams that want channel-based conversation with a large set of connected apps Companies that need to message people at other organizations through Slack Connect Workspaces that want to automate approvals and routine requests without code
Watch out for	The prices shown are for annual subscriptions paid yearly Calling to regular phone numbers needs a separate Teams Phone licence and calling plan Some AI features on Business Standard are billed by usage	The Free plan keeps only 90 days of message history and 10 apps Group huddles and group external messages need a paid plan Single sign-on needs Business+ and above
Made by	Microsoft	Slack Technologies (Salesforce)

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

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