Use the Claude, ChatGPT or Gemini plan your company already pays for.
Each one with the exact actions an agent can take in it.
All integrations30 minutes with us. Bring one job you never want to do again.
Muse plans your week, shops and books for you. A company needs something else: one brain your whole team shares, permissions for each person, and agents that ask before anything leaves.
Find me a cheaper phone plan and book dinner for Friday.
What it does well
What it does for a company
The short answerMuse is a strong personal agent, and its small-business version helps an owner run things alone. It is built around one person. If several people need the same knowledge with different access, and agents that each own a job, that is what Brainstack is for.
What one person needs from an agent, and what a company needs on top. What we say about Muse comes from its maker and the press, and we mark what isn't public.
| What you need | Muse | Brainstack |
|---|---|---|
| Who it is built for | MusePartlyOne person and everyday tasks. Muse for Small Business adds business tools for the owner. | BrainstackYesTeams of 3 to 30 people, and bigger on Custom. |
| A shared company brain | MusePartlyLearns from your chats, and the business version knows what you sell and how your brand sounds. No shared knowledge for a team is described. | BrainstackYesA living file per client, each fact with its source, read from the tools you connect. |
| Access for each person | MuseNoNot described. Meta's materials cover one owner approving each connection, not roles or access per person. | BrainstackYesEach person sees only what their role allows, in the app and from their own Claude or ChatGPT. |
| Agents for each job, on a schedule | MusePartlyOne agent that works on your goals in the background. | BrainstackYes27 agents ready to set up across marketing, sales, customers, operations and admin, each with a schedule and a dashboard. |
| Approvals before anything leaves | MuseYesMeta says Muse asks the owner before it publishes, sends or spends. | BrainstackYesSet per agent: sending, publishing, spending, deleting and amounts above your limit. |
| Your company's tools | MuseYesEmail, calendar, payments and shopping, plus Shopify, Slack, QuickBooks, Notion, Stripe and Meta ad accounts for businesses. | BrainstackYes100+ apps: Gmail, Outlook, Drive, Notion, HubSpot, Slack, Teams, Stripe, Xero. |
| Choice of AI | MuseNoMeta's Muse Spark models. | BrainstackYesYour company's Claude, ChatGPT or Gemini plan, with no margin from us. |
| Where company data lives | MusePartlyA dedicated virtual machine in Meta's cloud. Conversations can train Meta's models unless you opt out. | BrainstackYesA server only your company uses, in the US or Europe, with encrypted backups every 6 hours. |
| Personal errands | MuseYesIts core: plans, bookings, purchases and forms. | BrainstackNoNot what it's for. Brainstack does your company's work. |
| Price | MuseFree, $20 or $100 per month per person. Business plan prices not published. | Brainstack$99, $499 or $999 a month for the company, plus your AI plan. |
A personal agent knows one person. Brainstack keeps one brain for the whole company and answers each person with only what their role allows, from the app or from their own AI.
$1,200 a month from June, agreed on May 14. Margin is 34% this quarter, 3 points down after the May discount.
$1,200 a month from June, agreed on May 14. Margins aren't visible to your role.
Prices aren't visible to your role. On the account: 2 open tickets, both answered yesterday.
Instead of one assistant for one person, each agent owns a job, works to its schedule and brings you the big calls. One tap to approve, from the channel you already use.
Invoice to Northwind for $4,200. Above your $3,000 limit.
Approved and sent
Held. The agent will ask again tomorrow.
Second follow-up to Bluebird Co about the proposal from Tuesday.
Approved and sent
Held. The agent will ask again tomorrow.
Refund of $180 to Halcyon Foods for a double charge.
Approved
Held. The agent will ask again tomorrow.
More than 100 apps. The company brain reads only what you connect, and each agent acts only in the tools you give it.
Gmail, Drive, Notion, your CRM. The brain builds a living file per client from them.
Give each person a role. That decides what they see, in the app and in their own AI.
Pick a role, set its schedule and what needs your approval. It starts on the next run.
Every plan includes the company brain, your own server and approvals. You pay your company's AI plan directly to Anthropic, OpenAI or Google, at their price.
It is built for an owner: Meta's launch materials describe one owner who connects tools and approves what Muse publishes, sends or spends. They don't describe roles or what each person can see. Brainstack is built for a team from the start: one company brain, permissions per person and agents per job.
Yes. Many people will keep a personal agent for their own life. Brainstack handles the company's work, from your company's tools, with your team's permissions.
At the time of writing Meta lists the US and Canada. Brainstack runs on a server in the US or Europe and works in English and Spanish.
No. It is built for a company's work: clients, invoices, inbox, sales and support. Each person can still ask the company brain from their own Claude or ChatGPT, and gets only what their role allows.
Starter is $99 a month, Growth $499 and Scale $999, for the whole company. On top, you pay your company's AI plan (Claude, ChatGPT or Gemini) directly to the provider. We add no margin. Custom is priced with you.
On a server only your company uses, in the US or Europe, with encrypted backups every 6 hours. Your AI provider processes what an agent or a person sends it, under the terms of your plan.
Not yet. What we do have: one server per customer, permissions per person, approvals before anything leaves, a record of what each agent did, and GDPR terms.