Slack
by Slack · Channel-based team messaging with built-in AI and workflow automation
BenchRank score
Screenshots of Slack
Homepage
Overview
Slack is a messaging platform built around channels, where teams, apps and AI agents share conversations, files and decisions. It includes huddles for audio and video, Slack Connect for messaging people at other organisations, and Workflow Builder for automating routine tasks. Slackbot, its AI agent, summarises conversations and answers searches across the workspace.
- Best for
- Teams wanting channel-based messaging, huddles and AI summaries in one place, plus external chat.
- Pricing
- Free plan at £0, then Pro at £7 and Business+ at £14.40 per user/month billed monthly, with Enterprise+ priced on request.
- Runs on
- WebAndroidmacOSCLI
Strengths and trade-offs
Strengths
- Channels, huddles and Slack Connect for external teams
- Unlimited message history and app integrations on paid plans
- AI summaries, daily recaps and AI search included on paid tiers
- Workflow Builder automations by click or by code
Trade-offs
- Free plan caps history at 90 days and integrations at ten apps
- SAML single sign-on needs Business+; Pro only offers Google OAuth
- Enterprise search and multiple workspaces are Enterprise+ only
- Priced per user per month, so cost rises with headcount
Pricing
Published plans and prices from Slack’s own pricing page.
How this score is made up
Each dimension is scored out of 100 and combined into the headline score using fixed weights.
MCP support
Whether an agent can drive the product through the Model Context Protocol, and how much setup that takes.
API quality
Public API surface: machine-readable spec, official SDKs, documented auth, errors, rate limits and versioning.
Documentation
Publicly reachable docs — coverage, freshness, code samples and machine readability.
Agent friendliness
How readable the site is to an automated client: llms.txt, structured data, server-rendered content, crawler access.
Pricing transparency
Whether real prices are published, self-serve signup exists, and usage costs are knowable without a sales call.
Customer sentiment
Third-party ratings, shrunk toward the catalogue mean by review volume and corroborated across independent sources.
Changelog
A public, dated record of what shipped and when — the clearest signal that a product is still alive.
Marketing site structure
Whether the site answers a buyer's questions: clear positioning, the pages that matter, and accessibility.
Page speed
How fast the site loads for real visitors: Chrome UX Report 75th-percentile LCP, INP and CLS, with a Lighthouse mobile run standing in where a site has too little traffic for field data.
Operational trust
Status page and incident history, security disclosure, compliance and data-processing documentation.
Measured, but not part of the score
Useful to know, but not a mark for or against the product — so these do not affect the ranking.
Openness
Source availability, self-hosting, data export and open standards. Scored and shown, but not part of the composite — paid SaaS is not worse for being paid SaaS.
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Where this comes from
The Slack pages BenchRank reads when it scores the product — its documentation, release notes, status and security pages, and its repository where there is one.
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Is this your product?
Claim Slack to manage its profile. Claiming lets you suggest edits to the descriptive fields — it never changes scores or rankings.