Two dominant workplace communication platforms go head-to-head on pricing, integrations, usability, and features to help you choose the right one for your team.
Slack and Microsoft Teams are the two heavyweights of workplace communication, and most organizations will end up choosing one or the other. While both serve the same core purpose — team messaging with channels, direct messages, and integrations — they come from very different backgrounds and cater to different ecosystems.
Slack launched in 2013 and quickly became the default communication tool for tech companies, startups, and creative teams. Acquired by Salesforce in 2021 for $27.7 billion, Slack is known for its intuitive interface, powerful search, extensive app directory, and the threading model that keeps conversations organized. As of 2026, Slack serves over 200,000 paid organizations.
Microsoft Teams launched in 2017 as Microsoft's answer to Slack, deeply integrated into the Microsoft 365 ecosystem. Teams has grown explosively, surpassing 320 million monthly active users by leveraging its bundled inclusion with Microsoft 365 subscriptions. Teams combines chat, video conferencing, file storage (via SharePoint), and Office app integration into a single platform.
| Plan | Slack | Microsoft Teams |
|---|---|---|
| Free Tier | Yes (90-day message history, 10 integrations) | Yes (100-participant meetings, 5GB storage) |
| Starter/Basic | $7.25/user/mo | $6.00/user/mo (M365 Business Basic) |
| Pro/Standard | $12.50/user/mo | $12.50/user/mo (M365 Business Standard) |
| Business+/Premium | $17.50/user/mo | $22.00/user/mo (M365 Business Premium) |
| Video Conferencing | Huddles (limited), needs Zoom/Meet | Built-in (up to 300 participants) |
| File Storage | Limited (10GB workspace on free) | 1TB per user (M365 plans) |
The pricing comparison is nuanced. Slack's entry-level Pro plan at $7.25/user/mo is slightly more expensive than Microsoft Teams Essentials at $4.00/user/mo (standalone Teams plan). However, the real comparison is Slack Pro vs Microsoft 365 Business Basic at $6.00/user/mo, which includes not just Teams but also web versions of Word, Excel, PowerPoint, Exchange email, OneDrive storage, and SharePoint.
If your organization already uses Microsoft 365, Teams is essentially free — it is included in every M365 subscription. This bundling strategy is a massive competitive advantage and the primary reason Teams has grown so quickly.
Slack stands alone as a communication tool. You will still need separate solutions for email, file storage, video conferencing (for large meetings), and office productivity.
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Both platforms organize conversations into channels (Teams calls them "teams" and "channels"), but the execution differs significantly.
Slack's channel model is elegant and flexible. Channels can be public or private, and Slack Connect allows you to create shared channels with external organizations — a feature heavily used in B2B relationships. Slack's threading model is well-implemented: any message can become a thread, keeping the main channel clean while preserving context. Emoji reactions, custom emoji, and slash commands add personality and functionality.
Teams' channel model is more structured but less intuitive. Each "team" contains channels, and each channel is backed by a SharePoint folder for file storage. Threads in Teams work differently — replies appear inline within the channel rather than in a separate thread view, which can make busy channels harder to follow. Teams added threaded conversations in a side panel in recent updates, but it still feels less natural than Slack's approach.
Search: Slack's search is significantly better. It is fast, supports advanced filters (from:, in:, has:, before:, after:), and surfaces results with rich context. Teams' search has improved but still lags behind, sometimes struggling to find messages in large organizations.
Direct Messages: Both handle DMs and group DMs well. Slack allows DMs with people in external workspaces via Slack Connect. Teams allows external chat with anyone who has a Microsoft account.
This is an area where Teams has a decisive advantage.
Microsoft Teams includes a full-featured video conferencing platform that rivals Zoom. Features include meetings for up to 300 participants (1,000 with premium plans), screen sharing, breakout rooms, live captions and transcription, recording with automatic transcripts, background effects, Together Mode, and webinar capabilities. Teams meetings integrate directly with Outlook calendars and can be joined by external users without a Teams account.
Slack offers Huddles — informal audio and video calls with screen sharing for up to 50 participants. Huddles are great for quick, spontaneous conversations but lack the formality and feature depth of Teams meetings. For scheduled meetings, webinars, or large calls, most Slack organizations rely on Zoom, Google Meet, or another dedicated video conferencing tool.
If video conferencing is important to your workflow, Teams provides a complete solution. Slack requires a separate tool, which adds cost and friction.
Slack boasts over 2,600 apps in its App Directory, covering virtually every category of business software. Integrations with tools like Jira, GitHub, Salesforce, Google Workspace, Asana, Trello, PagerDuty, and Datadog are deep and well-maintained. Slack's Workflow Builder allows non-technical users to create automated workflows without code. The Slack API is robust, well-documented, and widely used for custom integrations.
Teams integrates deeply with the Microsoft ecosystem: Word, Excel, PowerPoint, OneNote, SharePoint, OneDrive, Power BI, Power Automate, and Dynamics 365 all work natively within Teams. The Teams app store has grown to over 1,800 third-party apps, though many integrations feel less polished than their Slack counterparts. Power Automate (formerly Flow) provides workflow automation capabilities comparable to Slack's Workflow Builder.
For developer teams, Slack's integrations with GitHub, GitLab, CircleCI, PagerDuty, and similar tools are notably more mature than their Teams equivalents.
AI Features: Both platforms have introduced AI assistants. Slack AI (available on Business+ plans) can summarize channels, catch you up on conversations you missed, and search across your workspace's history with natural language queries. Microsoft Copilot in Teams provides meeting summaries, action items from calls, and the ability to ask questions about meeting transcripts. Both are useful, but Copilot's meeting integration gives Teams an edge for organizations that hold many video calls.
File Sharing & Management: Teams integrates natively with SharePoint and OneDrive, meaning files shared in a channel are automatically organized in SharePoint folders with version history and co-authoring. Slack stores shared files on its own servers with limited storage (depending on plan) and no built-in file versioning. For organizations that manage many shared documents, Teams' file management is significantly more capable.
Slack is widely regarded as having the better user experience, and this reputation is well-earned.
Slack's interface is clean, fast, and focused. Navigation is intuitive — channels are in the sidebar, threads are a click away, and search is prominent. The app performs well even in large workspaces. Custom emoji, status messages, and Slackbot add personality. Keyboard shortcuts are comprehensive and well-designed for power users. The mobile app closely mirrors the desktop experience.
Teams' interface has improved significantly since its early days but still feels heavier than Slack. The left sidebar combines chat, teams, calendar, calls, and files into a navigation structure that can feel overwhelming. Loading times are longer, especially on the desktop app. The Electron-based desktop app historically consumed significant system resources, though the new Teams app (rebuilt in 2023) has improved performance substantially. The mobile app is functional but less fluid than Slack's.
For day-to-day messaging and quick communication, Slack feels faster and more enjoyable. Teams compensates with its broader feature set — you may not need separate apps for calendar, video calls, and file management.
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The Slack vs Teams decision often comes down to ecosystem and budget rather than features alone.
Choose Slack if: Your team values communication quality over everything else, you use a diverse set of non-Microsoft tools (Google Workspace, Atlassian, Salesforce), you want the best threading and search experience, or you are a developer-heavy organization that relies on deep third-party integrations.
Choose Microsoft Teams if: Your organization already uses Microsoft 365 (Teams is essentially free), you need built-in video conferencing, you want file storage and Office integration in the same platform, or you need enterprise-grade compliance and security features.
Our recommendation: If your organization is already invested in the Microsoft 365 ecosystem, Teams is the obvious choice — the cost savings and integration depth are hard to argue against. If you are not locked into Microsoft and want the best pure communication experience, Slack wins on UX, search, threading, and third-party integrations. For many organizations, the decision is made by existing infrastructure rather than feature comparison.
Microsoft Teams is included with every Microsoft 365 Business plan. Get chat, video meetings, file storage, and the full Office suite starting at $6/user/mo.