Head-to-Head
Slack vs Microsoft Teams (2026)
Slack
Freemium★ 4.5
Microsoft Teams
Freemium★ 4.2
Slack and Microsoft Teams are the two dominant workplace communication platforms. Slack is more beloved by developers and tech-forward companies for its interface, integrations, and developer culture. Teams is deeply embedded in Microsoft 365 and often the default choice for enterprises already using Office. The decision is usually driven by which productivity suite an organisation already pays for.
Feature Comparison
User Experience
Slack is widely considered the better-designed product. Teams is functional but feels heavier and more complex.
Microsoft 365 Integration
Teams is native to Word, Excel, SharePoint, and OneDrive. Slack's Office integrations are third-party.
Developer Integrations
Slack has a richer app directory with thousands of integrations. Teams has improved but lags in breadth.
Video Calls
Teams has a more mature video calling experience built in. Slack Huddles are lightweight but less featured.
Search & History
Both offer message search. Slack's search is faster and more intuitive; Teams indexes SharePoint content too.
AI Features
Slack AI and Microsoft Copilot in Teams both summarise threads and answer questions. Roughly equivalent in 2026.
Pricing
Teams is included in most Microsoft 365 plans. Slack Pro at $7.25/user/mo is an additional cost for similar features.
Verdict
This comparison is context-dependent. Slack scores 26/35 and Microsoft Teams scores 28/35. Choose based on your specific workflow needs.
Bottom Line
Slack and Microsoft Teams are the two leading workplace messaging platforms in 2026. Slack remains the better product on UX, integrations, and developer-friendly features (slash commands, workflow builder, custom bots). Teams is bundled with Microsoft 365, includes video conferencing without an upgrade, and is free for organisations already paying for Office. Pick Slack if your team values software quality, frequently uses third-party integrations, and chat is the core collaboration surface. Pick Teams if your organisation is already on Microsoft 365 and the bundled price (often $0 effective) outweighs the UX gap. Most large enterprises run Teams; most startups and tech-forward SMBs run Slack.
Pick Slack
You want the best chat-first collaboration tool with thousands of native integrations and a developer-friendly platform. Slack continues to lead on user experience and search quality. Best for tech companies, startups, and teams where chat is the primary work surface.
Pick Microsoft Teams
Your organisation runs on Microsoft 365 and you want collaboration tools bundled with email, Office, and storage. Teams is free with most M365 subscriptions and includes video, file sharing, and chat in one app. Best for enterprises and large traditional organisations.
Frequently asked
Is Teams really free?
Free with Microsoft 365 Business Basic ($6/user/mo) or any higher M365 tier. Teams Essentials standalone is $4/user/mo. Slack Pro starts at $7.25/user/mo. For organisations already on M365, Teams is effectively free; for organisations not on M365, the price is closer to Slack.
Which has better video conferencing?
Teams, by a clear margin. Teams Meetings include screen recording, breakout rooms, large meetings (1000+), and tight Outlook integration. Slack Huddles are improving but are designed for casual quick chats not formal meetings. For meeting-heavy organisations, Teams is more capable.
Can I use both?
Yes, and many organisations do. Common pattern: Teams for meetings and external collaboration with M365-using clients; Slack for internal chat and engineering. Some companies pay for both at small scale because the total cost is still less than productivity loss from a single tool that does not fit.
Which has better search?
Slack, clearly. Slack search returns results faster, ranks them better, and the keyboard shortcuts (Cmd+K) are best in class. Teams search has improved through 2025-2026 but still lags. For knowledge-heavy teams that rely on chat archives as institutional memory, Slack is the stronger choice.