Should I use Microsoft Teams or Slack?

Use Microsoft Teams if you're on Microsoft 365 and want chat tied into Word, Excel, and SharePoint; use Slack for a more reliable, broadly integrated messaging platform.

Is Microsoft Teams cheaper than Slack?

Yes — Teams Essentials starts at $4/user/month versus Slack Pro at $8.75/user/month.

Does Microsoft Teams have a Linux app like Slack?

No, Microsoft Teams has no official native Linux client, while Slack ships a native app for Linux alongside Windows, macOS, iOS, and Android.

Which has more app integrations, Microsoft Teams or Slack?

Slack has more app integrations, with 1.7 million weekly active integrations, versus Teams' integration set that is more centered on Microsoft's own SharePoint, OneDrive, and Office apps.

Microsoft Teams vs Slack (2026)

By Noahlast updated September 14, 2026

Verdict: Choose Microsoft Teams if you're already on Microsoft 365 and want chat, video, and calling tightly integrated with Word, Excel, and SharePoint. Choose Slack if you want the most reliable, bug-free messaging experience with the largest third-party app ecosystem. Reliability and integration depth are the deciding factors: reviewers report recurring crashes and sync failures in Teams, while Slack's app ecosystem (1.7 million weekly active integrations) dwarfs Teams' Microsoft-centric integration set.

Microsoft Teams

Microsoft's unified chat, video meeting, and calling platform, free to start with paid plans from $4/user/month.

Pricing: Free tier · paid from $4/mo
License: Freemium
Best for: organizations already using Microsoft 365 that need chat, video meetings, and calling tightly integrated with Word, Excel, Outlook, and SharePoint, from small teams under 300 people up to large enterprises

4.5/5 on Capterra (11,129 reviews)

Details microsoft.com

Slack

Channel-based team messaging platform with a free tier and paid plans from $8.75/user/month, owned by Salesforce.

Pricing: Free tier · paid from $8.75/mo
License: Freemium
Best for: teams that need organized, searchable chat with channels, quick huddles, and workflow automation, from small teams on the free tier up to large enterprises needing compliance controls

4.7/5 on Capterra (24,182 reviews)

Details slack.com

Choose Microsoft Teams if…

You're already paying for Microsoft 365 and want chat and video meetings tied natively into Word, Excel, PowerPoint, Outlook, and SharePoint
You want a lower entry price, since Teams Essentials starts at $4/user/month versus Slack Pro at $8.75/user/month
You need Copilot-generated meeting notes and live captions with real-time translation on paid tiers
You want Teams Phone calling bundled as an add-on within the same Microsoft ecosystem

Choose Slack if…

You want the most reliable messaging platform, since reviewers report recurring crashes, login errors, and sync failures in Teams
You need the largest third-party integration ecosystem, with 1.7 million weekly active app integrations versus Teams' Microsoft-centric set
You need a native Linux desktop client, which Teams doesn't offer
You want unlimited message history and apps without bundling into a broader Microsoft 365 Business plan

Microsoft Teams vs Slack: feature comparison

Feature	Microsoft Teams	Slack
Starting price	Yesfrom $4/user/mo (Teams Essentials)	Yesfrom $8.75/user/mo (Pro)
Free tier	Yesgroup video calls capped at 60 minutes	Yes90-day message history, up to 10 app integrations
Platforms	Partialweb, Windows, macOS, iOS, Android, no official Linux client	Yesweb, Windows, macOS, Linux, iOS, Android
License/hosting	Noclosed-source, cloud-based	Noclosed-source, cloud-based
Reported reliability	Partialreviewers cite recurring crashes, login errors, and sync failures	Yesno reliability issues noted in the data
Third-party app ecosystem	PartialMicrosoft-centric integration set (SharePoint, OneDrive, Office apps)	Yes1.7 million weekly active app integrations
AI meeting notes / summaries	YesCopilot-generated notes on eligible plans	YesSlackbot AI, basic on Free, advanced on Business+ ($18/user/mo)
Full desktop Office apps included	Yesfrom $23.50/user/mo (Business Standard)	Nonot an office-apps product
Unlimited message history	Unknownnot stated in the data	Yesfrom $8.75/user/mo (Pro)
Built-in audio/video calling	Yescore feature, unlimited 1:1 on free tier	YesHuddles, included on all tiers
Enterprise compliance (SAML, DLP)	Unknownnot stated in the data	Yescustom-priced Enterprise+ tier
External rating	Yes4.5/5 from 11,129 reviews (Capterra)	Yes4.7/5 from 24,182 reviews (Capterra)
Learning curve	Nomoderate	Yeslow

Microsoft Teams vs Slack pricing: which costs less?

Microsoft Teams costs less at the entry tier, starting at $4/user/month versus Slack Pro at $8.75/user/month.

Teams Essentials is $4/user/month billed annually for chat, calling, video conferencing, and 10GB storage. Microsoft 365 Business Basic (adding Exchange email, SharePoint, OneDrive) is $7/user/month, and Business Standard with full desktop Office apps and Copilot is $23.50/user/month. Slack's Pro tier is $8.75/user/month ($7.25/month billed annually) for unlimited message history and apps, with Business+ at $18/user/month for advanced AI.

Which is easier to use, Microsoft Teams or Slack?

Slack is easier to use, rated low learning curve against Teams' moderate rating, partly due to reviewer-reported bugs in Teams.

Slack's channel-based interface and reviewer feedback suggest a smoother day-to-day experience. Teams carries a moderate learning-curve rating in the data, and reviewers specifically cite recurring crashes, login errors, sync failures, and unreliable presence/status indicators as ongoing friction points.

Which is more reliable, Microsoft Teams or Slack?

Slack is more reliable based on the data: Teams reviewers report recurring bugs including crashes, login errors, and sync failures, while no such issues are noted for Slack.

This is listed as Microsoft Teams' primary weakness in the data, alongside its free tier's 60-minute call cap and the lack of a native Linux client. Teams' integration depth with Microsoft 365 remains a strength, but reliability is a recurring theme in reviewer feedback that the data doesn't mirror for Slack.

Can Slack replace Microsoft Teams?

Yes for messaging and video calling, since Slack covers channel-based chat, huddles, and app integrations, but it lacks Teams' native tie-in to Word, Excel, and SharePoint.

Organizations standardized on Microsoft 365 get file co-editing and app integration inside Teams that Slack doesn't replicate natively. Teams that prioritize messaging reliability and a broader app ecosystem over deep Office integration will find Slack a strong, arguably more stable substitute.

Strengths and weaknesses

Microsoft Teams

Pros

Free tier is usable for small teams with unlimited 1:1 messaging and calling.
Tight native integration with Word, Excel, PowerPoint, Outlook, and SharePoint.
AI-generated meeting notes, live captions, and real-time translation on paid tiers.
Scales from a $4/user/month Essentials plan up to enterprise-grade Teams Phone and Teams Premium add-ons.

Cons

Users report recurring bugs: crashes, login errors, sync failures, and unreliable status indicators.
Free tier caps group video calls at 60 minutes.
Full desktop Office apps require a $23.50/user/month Microsoft 365 Business Standard plan, not a lower-cost Teams-only upgrade.
No official native Linux client.

Slack

Pros

Organized, searchable channel-based messaging that scales better than a flat group-chat model.
Huge third-party integration ecosystem, including native Salesforce CRM and Google Drive integration.
Built-in Huddles provide quick audio/video calls without a separate meeting tool.
AI-powered search, summarization, and workflow automation available on Business+.

Cons

Free tier's 90-day message history is limiting for active teams.
Advanced compliance features (SAML, DLP, legal holds) require the custom-priced Enterprise+ tier.
Per-user pricing adds up for larger teams, especially at the $18/user/month Business+ tier.
Some advanced AI features are gated behind Business+ rather than included in Pro.

Which fits your use case?

Use case	Pick	Why
Organization already standardized on Microsoft 365 needing integrated chat and video	Microsoft Teams	Teams integrates natively with Word, Excel, PowerPoint, Outlook, and SharePoint; Slack has no equivalent native Office integration.
Team prioritizing messaging reliability and stability	Slack	Reviewers report recurring crashes, login errors, and sync failures in Teams; no such issues are noted for Slack in the data.
Team needing the widest range of third-party app integrations	Slack	Slack has 1.7 million weekly active app integrations versus Teams' more Microsoft-centric integration set.
Linux-based development team needing a native desktop client	Slack	Slack ships a native Linux client; Microsoft Teams has no official Linux desktop app.
Budget-conscious small team wanting the lowest entry price for chat and video	Microsoft Teams	Teams Essentials starts at $4/user/month versus Slack Pro at $8.75/user/month.

Neither a match?

Both lists carry verified pricing and honest weaknesses for every option.

5 alternatives to Microsoft Teams 5 alternatives to Slack

Popular comparisons

Microsoft Teams vs Slack: migration FAQ

Should I use Microsoft Teams or Slack?: Use Microsoft Teams if you're on Microsoft 365 and want chat tied into Word, Excel, and SharePoint; use Slack for a more reliable, broadly integrated messaging platform.
Is Microsoft Teams cheaper than Slack?: Yes — Teams Essentials starts at $4/user/month versus Slack Pro at $8.75/user/month.
Can Slack replace Microsoft Teams?: Yes for messaging and video calling, since Slack covers channel-based chat and huddles, but it doesn't natively integrate with Word, Excel, and SharePoint the way Teams does.
Which is more reliable, Microsoft Teams or Slack?: Slack, based on the data: Teams reviewers report recurring crashes, login errors, and sync failures, while no such reliability issues are noted for Slack.
Does Microsoft Teams have a Linux app like Slack?: No, Microsoft Teams has no official native Linux client, while Slack ships a native app for Linux alongside Windows, macOS, iOS, and Android.
Which has more app integrations, Microsoft Teams or Slack?: Slack has more app integrations, with 1.7 million weekly active integrations, versus Teams' integration set that is more centered on Microsoft's own SharePoint, OneDrive, and Office apps.