Slack — Free forever with 90 days of history and 10 apps — then $7.25 or $15 per user a month annually, with a launch discount that halves the monthly price for three months.
Short answer: Slack’s Free plan costs $0 and keeps 90 days of message history with up to 10 apps. Pro is $7.25 per user per month billed annually or $8.75 monthly, with unlimited message history and integrations. Business+ is $15 per user per month annually or $18 monthly, adding SAML SSO, SCIM user management, data loss prevention and the AI-powered features Slack markets as its best-value tier. Enterprise+ is quoted. On 29 September 2026 the page advertises 50% off for three months on monthly Pro ($4.38) and Business+ ($9). Slack was acquired by Salesforce, and the pricing page sits on slack.com.
On this page
Verdict at a glance
Overall rating: 4.5/5 ★★★★☆
Standout: A free plan that is still genuinely usable for a small team — 90 days of searchable history, 10 apps from a directory of 2,600, and 1:1 huddles — with a clean two-tier paid ladder above it.
Watch out: The annual and monthly prices differ by about 20% — $7.25 versus $8.75 on Pro, $15 versus $18 on Business+ — and the ‘50% off for 3 months’ banner applies to monthly billing only, so the discounted $4.38 becomes $8.75, not $7.25, when it ends.
Slack is still the product other team-chat tools are measured against, and its pricing page is one of the clearest in SaaS. Free costs nothing for as long as you like, with 90 days of message history, up to 10 apps from a directory of more than 2,600, and one-to-one huddles; the history window is the constraint that eventually pushes a growing team to pay. Pro is $7.25 per user per month billed annually or $8.75 monthly and removes the limits — unlimited history, unlimited integrations, group huddles and external collaboration. Business+ is $15 annually or $18 monthly and is where security and administration live: SAML single sign-on, SCIM provisioning, EMM support, native data loss prevention and the AI features Slack now leads its ‘best value’ tier with. Enterprise+ is quoted for organisations that need the full compliance and multi-workspace grid. Two small cautions. The launch promotion on the page — 50% off for three months, shown as $4.38 and $9 — applies to monthly billing, so a team that signs up on it reverts to $8.75 or $18, not the annual rate. And the AI features are concentrated in Business+, so a team that wants summaries and search across the workspace should price the $15 tier, not the $7.25 one. Against alternatives, Microsoft Teams Essentials is $4 a user and Google Workspace’s Business Starter is $7 with a full office suite attached, but both are bundles rather than chat-first tools. Four and a half stars for a free tier that works, two paid tiers that are easy to choose between, and a price gap between them that is justified by what Business+ adds.
Quick facts
| Attribute | Detail |
|---|---|
| Ideal team | Any team that runs on chat, from startups to enterprises |
| Learning curve | Very low |
| Setup time | Minutes |
| Free trial | Free plan instead; 50% off 3 months on monthly paid plans at time of reading |
| Free tier | ⭐ Free forever — 90 days history, 10 apps |
| Entry | $7.25/user/mo Pro (annual) — $8.75 monthly |
| Business+ | $15/user/mo annual — $18 monthly; SSO, SCIM, DLP, AI |
| Enterprise+ | ⚠️ Contact sales |
Overview
Slack organises work into channels and direct messages, with huddles for audio and video, canvases for documents, workflow automation and an app directory of more than 2,600 integrations. The Free plan is $0 forever: messages are saved and searchable for 90 days (upgrading unlocks the previous 12 months), up to 10 apps can be installed, and huddles are one-to-one. For a team of five that mostly needs a place to talk, Free lasts a long time; the day it stops working is the day someone needs a message from four months ago.
Pro is $7.25 per user per month when paying annually or $8.75 when paying monthly. It brings unlimited message history and unlimited apps, group huddles, and the collaboration features for working with people outside the workspace. Business+ is $15 per user per month annually or $18 monthly and is labelled best value on the page: it adds SAML single sign-on, SCIM user management, enterprise mobility management integration, native data loss prevention, and the AI-powered features Slack now positions as the reason to choose the tier. Enterprise+ has no listed price and is sold for organisations that need the most comprehensive controls and multi-workspace management.
On 29 September 2026 the pricing page carries a promotion — 50% off for three months on monthly billing, shown as $4.38 for Pro and $9 for Business+. It is worth reading the small print: the discount is on the monthly rate, so when it ends the price is $8.75 or $18, which is roughly 20% above the annual rate. The comparison with bundled suites is different in kind. Microsoft Teams Essentials is $4 per user per month annually for chat, calls and meetings; Microsoft 365 Business Basic is $7 with Teams plus web Office apps and 1 TB of storage; Google Workspace Business Starter is $7 per user with Gmail, Drive, Meet and Chat. Those are cheaper per seat and include more, but a team choosing Slack is usually choosing it for the chat experience and app ecosystem rather than the bundle.
Key features
- Free plan — ⭐ $0 forever; 90 days of history; up to 10 apps; 1:1 huddles
- Pro — $7.25/user/mo annual or $8.75 monthly; unlimited history and apps
- Business+ — $15/user/mo annual or $18 monthly; SAML SSO, SCIM, DLP, AI features
- Enterprise+ — ⚠️ contact sales; multi-workspace grid and full compliance
- App directory — 2,600+ apps including Salesforce, Jira, Google Drive and ChatGPT
- Huddles — audio and video, 1:1 on Free, group on paid
- Canvases and workflows — documents and automation inside channels
- Launch promotion — ⚠️ 50% off 3 months applies to monthly billing only
- Annual saving — about 17–20% versus monthly
- Security — SSO, SCIM, EMM and native DLP on Business+
Pricing (as of 2026-09-29)
Model: per-user subscription with a free tier · Free tier: ⭐ Yes — free forever with 90-day history · Entry paid: Pro $7.25/user/mo (annual)
| Plan | Price | Includes |
|---|---|---|
| Free | $0 | 90 days of message history · up to 10 apps · 1:1 huddles |
| Pro | $7.25/user/mo annual · $8.75 monthly | Unlimited message history · unlimited apps · group huddles · external collaboration |
| Business+ | $15/user/mo annual · $18 monthly | SAML SSO · SCIM · EMM integration · native DLP · AI-powered features |
| Enterprise+ | Contact sales | Most comprehensive controls and multi-workspace management |
⚠️ The ‘50% off for 3 months’ promotion on the page (Pro $4.38, Business+ $9) is on monthly billing. After three months those seats cost $8.75 and $18 — about 20% more than the annual rates of $7.25 and $15.
⭐ Free is not time-limited. Its practical ceiling is the 90-day history window and the 10-app cap; upgrading restores the previous 12 months of messages.
The AI features Slack advertises are listed under Business+, not Pro. Teams buying Slack for AI summaries and search should budget $15 per user annually.
Enterprise+ has no published price. Organisations needing HIPAA-style controls, multiple workspaces on a grid or advanced compliance go through sales.
Ratings breakdown
| Criterion | Score | Why |
|---|---|---|
| Ease Of Use | 5.0/5 | The interface every other chat tool copies |
| Features | 4.5/5 | Channels, huddles, canvases, workflows and 2,600 apps |
| Value | 4.0/5 | ⭐ Free tier is real; ⚠️ AI sits in the $15 tier |
| Support | 4.0/5 | Standard support; 24/7 and SLAs with Enterprise+ |
Pros
- Free plan with no time limit
- Pro at $7.25 annually removes every free-tier limit
- Business+ bundles SSO, SCIM, DLP and AI at $15
- 2,600-plus apps in the directory
- Huddles and canvases included without add-ons
- Prices for annual and monthly both shown on the page
- Promotion clearly labelled as three months
Cons
- ⚠️ Free plan keeps only 90 days of history
- ⚠️ AI features require Business+ at $15
- ⚠️ Monthly billing is about 20% dearer than annual
- Enterprise+ is quote-only
- Microsoft Teams Essentials undercuts at $4 a user
- Bundled suites include an office suite at a similar price
Who it’s for
- Teams that live in chat and want the deepest app ecosystem
- Small teams who can stay on Free for a long time
- Companies that need SSO, SCIM and DLP at $15 a user
- Organisations already integrating Salesforce, Jira or Google Drive
Who it’s not for
- Businesses that want chat bundled with email and documents — Google Workspace or Microsoft 365 include it
- Budget teams for whom Teams Essentials at $4 suffices
- Teams needing AI features but only willing to pay the Pro rate
- Regulated enterprises that need a published Enterprise+ price
Best use cases
- Running a ten-person startup on Free until the history limit bites
- Moving to Pro at $7.25 for unlimited history and integrations
- Provisioning users through SCIM and SSO on Business+
- Connecting ChatGPT, Jira and Salesforce apps from the directory
- Replacing status meetings with huddles and canvases
Integrations
Slack’s directory lists more than 2,600 apps, and the pricing page names Salesforce, Jira, Google Drive and ChatGPT among them. On this site the usual connections are HubSpot Sales Hub and Salesforce for deal alerts, Zapier, Make and n8n for automations, Notion for documents, and DocuSign for signing notifications. ChatGPT Business connects to Slack natively.
How it compares
| Slack | Microsoft Teams | Google Workspace | |
|---|---|---|---|
| Free tier | ⭐ Free forever, 90-day history | Free Teams for personal use | No — 14-day trial |
| Entry paid | $7.25/user/mo (Pro, annual) | $4/user/mo (Teams Essentials, annual) | $7/user/mo (Business Starter) |
| Mid tier | $15/user/mo (Business+, annual) | $7/user/mo (Microsoft 365 Business Basic) | $14/user/mo (Business Standard) |
| Top self-serve | Enterprise+ quoted | $23.50/user/mo (Business Standard with Copilot) | $22/user/mo (Business Plus) |
| What is bundled | Chat, huddles, canvases, 2,600 apps | Chat, meetings, and Office apps on M365 plans | Gmail, Drive, Meet, Chat and Docs |
| Best fit | Chat-first teams and app ecosystems | Microsoft shops wanting the cheapest seat | Google shops wanting one suite |
Slack figures from slack.com/pricing, Microsoft Teams from microsoft.com’s Teams business comparison page and Google Workspace from workspace.google.com/pricing, all read on 2026-09-29. Google Workspace shows a promotional 30–50% off for three months; the standard prices are quoted here.
Alternatives
Microsoft Teams Essentials at $4 per user per month is the cheapest paid chat-and-meetings seat, and Microsoft 365 Business Basic at $7 adds web Office apps and 1 TB of storage. Google Workspace Business Starter at $7 bundles Chat with Gmail, Drive and Meet. Neither is chat-first the way Slack is. For the knowledge layer beside chat, Notion and Coda integrate with all three, and Zapier handles the automation between them.
Recent changes
As of 2026-09-29, slack.com/pricing lists Free at $0 with 90 days of message history and up to 10 apps; Pro at $7.25 per user per month billed annually or $8.75 monthly with unlimited history and integrations; Business+ at $15 per user per month annually or $18 monthly with SAML SSO, SCIM user management, EMM integration, native data loss prevention and AI-powered features; and Enterprise+ on request. The page advertises 50% off for three months on monthly billing, showing Pro at $4.38 and Business+ at $9 for that period. Business+ is labelled the best-value tier and carries the AI features.
Frequently asked questions
How much does Slack cost?
Free is $0. Pro is $7.25 per user per month billed annually or $8.75 monthly. Business+ is $15 per user per month annually or $18 monthly. Enterprise+ is quoted. At the time of reading, monthly Pro and Business+ were discounted 50% for the first three months.
Is Slack’s free plan good enough for a small team?
Often, yes. It has no time limit, includes channels, direct messages, 1:1 huddles and up to 10 apps. The constraint is the 90-day message history — once the team needs to search older conversations, Pro at $7.25 a user restores the previous 12 months and removes the app cap.
What does Slack Business+ add over Pro?
Security and administration: SAML single sign-on, SCIM user management, EMM integration and native data loss prevention — plus the AI-powered features Slack advertises on the page. That is why Business+ is $15 against Pro’s $7.25.
Is the Slack 50% off promotion on annual plans?
No. The page shows $4.38 for Pro and $9 for Business+ as 50% off for three months on monthly billing. After the promotion those seats cost $8.75 and $18, which is about 20% more than the annual rates.
How does Slack compare with Microsoft Teams and Google Workspace on price?
Teams Essentials is $4 per user annually and Microsoft 365 Business Basic $7 with Office apps included; Google Workspace Business Starter is $7 with Gmail, Drive and Meet. Slack Pro at $7.25 is chat-only but has the deepest app ecosystem and the cleanest chat experience — a different kind of purchase than a suite.
Does Slack include AI features?
Slack lists AI-powered features under Business+ ($15 per user per month annually), not Pro. A team that wants AI summaries and search should budget the higher tier.
Sources
- Slack – official pricing page (read 2026-09-29)
- Slack – homepage (read 2026-09-29)
- Slack – app directory (read 2026-09-29)
Compiled from public sources; last verified 2026-09-29. Pricing is subject to change — verify with the vendor. Ratings reflect editorial opinion based on documented capabilities, published pricing, and aggregated user reviews. DigiJaws does not accept payment for review placement or rating.
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Slack Review (4.5/5): Pricing & Verdict (2026). DigiJaws, 2026. https://digijaws.com/reviews/slack-review/