Slack retired the standalone $10-per-user AI add-on in 2025 and folded its advanced features into the Business+ plan, which runs $15 per user per month billed annually or $18 billed monthly. For a team that was happy on Pro and just wanted recaps and better search, that’s roughly double the per-seat cost — and there’s no cheaper AI tier to fall back to. The good news: you can put a real AI agent in Slack without moving your whole organization to Business+.
TL;DR
Slack’s $10 AI add-on is gone; advanced AI now requires Business+ at $15–$18 per user per month, so a 20-person team pays $3,600–$4,320 a year for it. A flat hosted agent like OpenClaw Direct sits on any Slack tier for one price and actually does work in your channels, not just summarizes them.
What changed in 2025
Until mid-2025, Slack AI was an optional extra. You could stay on a lower-cost plan and bolt AI on for a flat $10 per user per month. That option is closed. In June 2025 Slack announced it was expanding access to AI, security, and Salesforce features, and to pay for it, it raised the price of Business+ and stopped selling the standalone add-on. The change is documented in Slack’s own help center notice on plan updates.
Three things moved at once. The AI add-on is no longer available to buy. Customers who already had it kept access until their first renewal after August 17, 2025, then migrated to whatever AI their subscription includes. And advanced AI — the search, the recaps, the writing help — now lives inside Business+ and the new Enterprise+ plan. If you want the full feature set, Business+ is the floor.
Slack did soften the edge a little. Two features, conversation and thread summaries and huddle notes, are now available on every paid plan. So a basic “catch me up” summary no longer costs extra. But the deeper AI — searching across your workspace in natural language, daily channel recaps, and the assistant surface — is gated behind Business+. There’s no middle tier anymore.
What you actually pay now
Per-seat pricing is easy to underestimate because the sticker number looks small. Business+ is $15 per active user per month billed annually, or $18 billed monthly. Pro, the plan just below it, is $7.25 per user annually or $8.75 monthly. That gap is the real cost of unlocking Slack AI: for a team on Pro that just wants the AI, moving to Business+ roughly doubles the per-seat price.
Multiply it across a team and the jump gets concrete. Here’s a 20-person workspace.
| Plan (20 users) | Per user / mo | Monthly total | Annual total |
|---|---|---|---|
| Pro (annual) — no advanced AI | $7.25 | $145 | $1,740 |
| Business+ (annual) — AI included | $15 | $300 | $3,600 |
| Business+ (monthly) — AI included | $18 | $360 | $4,320 |
Upgrading those 20 seats from Pro to Business+ to switch on AI adds about $1,860 a year on annual billing, and more if you pay monthly. Every new hire is another $15 to $18 a month whether or not that person ever touches an AI feature. That’s the nature of per-seat pricing: the bill grows with headcount, not with usage.
What you get for it — and what you don’t
Slack AI is good at what it does. Ask it to catch you up on a busy channel and it writes a tidy recap. Search your workspace in plain language and it surfaces the message you half-remember. Miss a huddle and it hands you notes. These are real time-savers, and if summarizing and finding are your main pains, Business+ earns its keep.
What Slack AI does not do is act. It reads your messages and tells you about them. It won’t open a ticket, run a nightly report, pull a number from an external system, or draft-and-send a follow-up on your behalf. It summarizes the work; it doesn’t do the work. For a lot of teams that’s the gap that actually hurts — not “I can’t find the thread” but “I wish someone had handled this while I slept.”
That’s a different kind of tool. An agent you can talk to like a teammate takes an instruction and carries it out, then reports back in the same channel. It’s the difference between a very good meeting-notes feature and a coworker who happens to live in Slack.
Slack AI via Business+ vs a flat hosted agent
Here’s the honest side-by-side. On the left, Slack AI as it ships in Business+. On the right, a hosted agent like OpenClaw Direct — one instance, connected to Slack, running on any plan you already have.
| Slack AI (Business+) | Hosted agent (OpenClaw) | |
|---|---|---|
| Requires a plan upgrade | Yes — Business+ or above | No — works on Free, Pro, any tier |
| Pricing model | Per seat ($15–$18/user/mo) | Flat ($19–$59/mo, whole workspace) |
| Acts vs. summarizes | Summarizes and searches | Acts — runs tasks, calls tools |
| Runs overnight | On demand, when you ask | Yes — always-on hosted instance |
| Trains on your messages | No, per Slack’s policy | No — never, keys encrypted at rest |
The pricing lines are the ones people miss. Slack AI scales with your headcount; the hosted agent is one flat bill for the workspace, so a 5-person team and a 50-person team pay the same for the agent. On the data question, both come out fine — Slack says it doesn’t train its models on customer data, and a hosted agent doesn’t either. If that’s a live concern for you, we go deeper in does Slack AI train on your data.
How a hosted agent sits on any Slack tier
A hosted agent doesn’t live inside Slack’s plan structure, which is exactly why it dodges the per-seat math. It runs on its own private instance and connects to your workspace through the normal Slack app install — click Add to Slack, authorize, and DM the bot or @mention it in a channel. Your Slack plan stays whatever it is now. Free stays free, Pro stays Pro. The agent connection itself costs nothing on the Slack side.
Because it’s hosted and always on, the agent answers a teammate’s 2am question and finishes a job while your laptop is shut. Because it’s billed flat, adding people to Slack doesn’t raise the agent’s price. And because it only sees the DMs and channels you add it to, you decide its reach one channel at a time. You can see how the connection works on the Slack integration page, and the tiers on the pricing page — Basic at $19, Advanced at $29, Turbo at $59 a month, for the whole workspace.
Good to know: This isn’t a pure either/or. Slack AI and a hosted agent solve overlapping but different jobs — native summaries and search are woven into the Slack UI, while a hosted agent adds an actor that runs tasks and works overnight. Some teams run both. The point of this piece is narrower: you don’t have to buy Business+ across every seat just to put a capable AI agent in Slack.
Frequently Asked Questions
How much does Slack AI cost in 2026?
Slack AI is no longer sold on its own. Its advanced features are bundled into Business+, which costs $15 per user per month billed annually or $18 billed monthly. Conversation summaries and huddle notes are now included on every paid plan, but the fuller AI experience — search and recaps — requires Business+.
Is the $10 Slack AI add-on still available?
No. Slack stopped selling the standalone add-on in 2025. Anyone who bought it kept access until their first renewal after August 17, 2025, then moved to the AI included in their subscription. You can’t attach AI to a cheaper plan for a flat $10 per seat anymore.
Do I need Business+ to use AI in Slack?
For the advanced features, yes. Thread and conversation summaries plus huddle notes work on any paid plan, but enterprise search, channel recaps, and the assistant surface are gated behind Business+ at $15 to $18 per user per month.
What’s the cheapest way to get an AI agent in Slack?
A hosted agent that connects to your existing Slack plan for one flat price. OpenClaw Direct starts at $19 a month for the whole workspace and the Slack connection is free, so you skip the per-seat Business+ upgrade entirely. It also acts on tasks rather than only summarizing. See the plans and pricing.
Does Slack AI train on your data?
Slack states it does not use customer data to train its large language models. A hosted agent like OpenClaw Direct also never trains models on your Slack messages, and your workspace token is encrypted at rest. We cover the details in does Slack AI train on your data.
Can I use a hosted AI agent on Slack’s Free or Pro plan?
Yes. A hosted agent runs on its own instance and connects through the standard Slack app install, so it works on any tier including Free and Pro. You keep your current plan and pay one flat price for the agent instead of upgrading everyone to Business+.
Get an agent without the per-seat upgrade
The math is simple. Slack put its AI behind Business+ at $15 to $18 a seat, and for a 20-person team that’s $3,600 to $4,320 a year just to switch it on — a bill that climbs with every hire. A flat hosted agent sits on the Slack plan you already have, costs one price for the whole workspace, and does more than summarize: it runs the task. If that trade sounds right, add it to Slack and try it, or compare the tiers first on the pricing page.