Slack vs Microsoft Teams: Independent comparison
The channel-native pioneer vs the M365-bundled default. Slack for tool integration; Teams if you already run M365. This comparison currently favours Slack in the default buyer context; Microsoft Teams pulls ahead when the buyer prioritises the criteria highlighted below.
Set your context — the verdict adapts
Weighted for product fit and integrations.
Choose Slack when
Choose Slack when all teams matches your buyer, and you value channels and ecosystem.
Choose Microsoft Teams when
Choose Microsoft Teams when enterprise matches your buyer, and you value bundled with m365.
Consider another option when
Neither is ideal when your team needs a category-specific collaboration tuned to a single vertical workflow — a specialist alternative usually wins on time-to-value.
Best for startups
Slack
Weighted for time-to-value and entry price.
Best for mid-market
Slack
Weighted for product fit and integrations.
Best for enterprise
Slack
Weighted for customisation, security and scale.
Fastest implementation
Slack
Weighted purely for time-to-value.
Lowest entry cost
Microsoft Teams
Weighted purely for verified entry price.
Most customisable
Slack
Weighted for extensibility and APIs.
At a glance
Detailed criteria
Core product fit
Weight in this context: 16%Slack
Score 8/10
Microsoft Teams
Score 6/10
Weighted verified review sentiment for Collaboration, normalised across seat sizes.
Sources: Slack verified reviews · Microsoft Teams verified reviews
Time to value
Weight in this context: 10%Slack
Score 8/10
Microsoft Teams
Score 7/10
How quickly a typical team gets to first productive use without paid services.
Sources: Slack verified reviews · Microsoft Teams verified reviews
Entry price
Weight in this context: 10%Slack
Score 9/10
Microsoft Teams
Score 10/10
Verified public entry pricing: Slack $7.25/mo, Microsoft Teams $4/mo.
Sources: Slack pricing page · Microsoft Teams pricing page
Total cost of ownership
Weight in this context: 12%Slack
Score 9/10
Microsoft Teams
Score 9/10
Combined entry price and typical add-ons / services needed at 12 months.
Sources: Slack pricing page · Microsoft Teams pricing page
Ease of use
Weight in this context: 10%Slack
Score 8/10
Microsoft Teams
Score 7/10
Admin and end-user friction based on verified reviews and hands-on notes.
Sources: Slack verified reviews · Microsoft Teams verified reviews
Integrations & ecosystem
Weight in this context: 14%Slack
Score 8/10
Microsoft Teams
Score 7/10
Breadth of native integrations and marketplace depth.
Sources: Slack verified reviews · Microsoft Teams verified reviews
Customisation & extensibility
Weight in this context: 14%Slack
Score 8/10
Microsoft Teams
Score 8/10
APIs, custom objects, and configuration ceiling.
Sources: Slack verified reviews · Microsoft Teams verified reviews
Support
Weight in this context: 7%Slack
Score 7/10
Microsoft Teams
Score 6/10
Included support channels and verified responsiveness.
Sources: Slack verified reviews · Microsoft Teams verified reviews
Security & compliance
Weight in this context: 7%Slack
Score 9/10
Microsoft Teams
Score 9/10
Attestations, data residency and admin controls.
Sources: Slack trust & security · Microsoft Teams trust & security
Scoring methodology
The contextual result above is a weighted average of criterion scores. Weights change with your selected company size, so the same underlying scores can produce a different winner for a startup than for an enterprise.
| Criterion | Default | In Mid-market |
|---|---|---|
| Core product fit | 16% | 16% |
| Time to value | 14% | 10% |
| Entry price | 12% | 10% |
| Total cost of ownership | 12% | 12% |
| Ease of use | 10% | 10% |
| Integrations & ecosystem | 10% | 14% |
| Customisation & extensibility | 10% | 14% |
| Support | 8% | 7% |
| Security & compliance | 8% | 7% |
Evidence and sources
6 sources used in this comparison.
Slack pricing pageSlack · Official pricingAccessed 2026-07-10
Microsoft Teams pricing pageMicrosoft Teams · Official pricingAccessed 2026-07-10
Slack trust & securitySlack · Security documentationAccessed 2026-07-10
Microsoft Teams trust & securityMicrosoft Teams · Security documentationAccessed 2026-07-10
Slack verified reviewsG2 aggregate · Verified review corpusAccessed 2026-07-10
Microsoft Teams verified reviewsG2 aggregate · Verified review corpusAccessed 2026-07-10
What changed
| Date | Change | Reason | Reviewer |
|---|---|---|---|
| 2026-07-10 | Entry pricing re-verified for Slack and Microsoft Teams | Quarterly pricing review | ChooseOS analyst desk |
| 2026-05-18 | Scores refreshed against latest verified review corpus | Rolling review refresh | ChooseOS analyst desk |
Independence statement
This comparison was researched independently. Neither Slack nor Microsoft Teams paid to alter its inclusion, criteria, scores, rankings or verdict.
Official vendor perspectives
Each vendor may publish an equal-format response. Vendor content is labelled and does not influence the independent verdict above.
Slack's perspective
No official response published. If you represent Slack, claim your profile to publish one.
Microsoft Teams's perspective
No official response published. If you represent Microsoft Teams, claim your profile to publish one.
FAQ
Frequently asked questions
Which is better overall, Slack or Microsoft Teams?
There is no universal winner. In this context (company size, priorities and use case above), the weighted verdict favours Slack, but the contextual verdict cards show where each product wins.
How does Slack pricing compare to Microsoft Teams?
Full pricing is verified quarterly and shown in the criteria section above. Headline prices rarely reflect total cost of ownership — factor in implementation, add-ons, integrations and support tier when you compare.
Is this comparison paid for by either vendor?
No. Neither Slack nor Microsoft Teams paid to alter inclusion, criteria, scores or the analyst verdict. Vendors may publish an official perspective in the labelled section above; those do not affect the independent analysis.
How current is this comparison?
Last reviewed 2026-07-10. Pricing was re-verified 2026-07-10. Material changes are added to the public change history.
Can I request a comparison ChooseOS hasn't published?
Buyers can suggest matchups via Contact — buyer signal is what drives our publishing queue. Verified vendors can request head-to-head comparisons directly from their profile.