Slack vs Microsoft Teams: Best Team Communication Tool in 2025?
Slack and Microsoft Teams dominate team messaging. Here is how to choose between them — and where AI tools fit into modern team communication in 2025.
Slack vs Microsoft Teams: Best Team Communication Tool in 2025?
Quick Answer
For startups, creative agencies, and tech companies: Slack — better UX, stronger third-party integrations, culture of async communication. For enterprises already using Microsoft 365: Microsoft Teams — deep Office integration, video meetings, lower incremental cost if you already pay for M365.
Slack — Best for Startups and Tech Teams
Pricing: Free (limited), Pro $7.25/user/month, Business+ $12.50/user/month
Best for: Tech companies, startups, agencies, remote-first teams
Slack’s channel organization, search, and app ecosystem are best-in-class. 2,400+ integrations. The free tier limits message history (90 days). AI features (Slack AI) include conversation summaries, search answers, and channel recaps — available on paid plans.
Microsoft Teams — Best for Microsoft 365 Users
Pricing: Essentials $4/user/month, Microsoft 365 Business Basic $6/user/month (includes Teams)
Best for: Enterprises, education, organizations already using Office
Teams is included in Microsoft 365 subscriptions, making it effectively free for existing M365 customers. Copilot AI (requires Microsoft 365 Copilot license at $30/user/month) adds meeting transcription, chat summaries, and document drafting from Teams conversations.
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