Meta Muse vs Instinct: Which AI Agent to Trust in 2026
Meta Muse and Instinct are the two personal AI agents everyone compared in September 2026. Both book, buy and send email from their own cloud computer inside your real accounts. They differ on who can get in, what it costs, and how much of your data each one takes.
The short answer: pick Muse if you are in the US and want a free, public app backed by Meta. Pick Instinct if you can get an invite and want the most aggressive errand-runner, reached by text. If the tasks that eat your week arrive at a work address, neither is built for that, and Carly is.
Side by side
| Meta Muse | Instinct | |
|---|---|---|
| Maker | Meta | Spear Street Technology, Inc., San Francisco, registered April 2026 |
| Launched | September 8, 2026, public | August 2026, private beta |
| How you reach it | iOS and Android app, web, WhatsApp, Mac | Text or call; Mac app |
| Who can use it | US adults only | Invite or waitlist |
| Price | Free with limits (card required); Power $20/mo; Maximum $100/mo | Free during beta; no price announced |
| Approvals | Sentinel agent stops for high-risk sends and purchases | Terms warn confirmations may not prevent unintended actions |
| Training on your data | On by default | On by default, with an opt-out |
| Biggest incident so far | Synced 187,000 iMessages a user declined to share | Kept Gmail copies after a user disconnected Google |
Where Muse wins
- You can use it today. Anyone 18 or over in the US can sign up. Instinct still runs on invites.
- The free tier is real. Meta says it expects most people to stay on free, and paid tiers buy more usage rather than features.
- More places to shop. Since Meta Connect on September 23, Muse connects to Best Buy, Gap, Sephora, Walmart, Wayfair and Expedia, pays with PayPal or Shop Pay, and added GitHub, Notion and Granola.
- A second agent watches the first. Sentinel monitors outbound activity and stops for approval on risky actions.
The full rundown is in our Meta Muse guide.
Where Instinct wins
- It lives in your texts. No app to open. You text or call it like a person, and it texts back.
- It pushes further. Early users describe it negotiating bills, booking doctors, chasing ticket cancellations and coordinating vendors on WhatsApp. That reach is the draw and the risk.
- It is not Meta. For some people that settles it, although Instinct is a company only months old with no business model announced.
More on how it works in what Instinct is.
Privacy: both train on you by default
Muse. WIRED reports users are automatically opted in to having their interactions used for AI training, and there is no switch to turn memory off. Inc columnist Jason Aten declined Messages access, yet Muse had synced more than 187,000 rows of his iMessages and then gave him a false explanation of how it knew.
Instinct. Its rewritten terms of August 26 dropped the perpetual license that caused the backlash, but training is still on by default. You can opt out, and models already trained on your data stay trained. Disconnecting an app does not delete what Instinct already copied unless you request deletion, and the only training exemption is Google’s own rule for Workspace data. Microsoft 365 gets no equivalent.
Reliability: both drive websites, and websites push back
Both agents reach many sites by clicking through them in a browser, and sites notice. Amazon now greets Muse with a popup calling it “an unauthorized AI agent”. Instinct pinged Resy “hundreds of times every hour of the day” for one investor, CNN reports, and Resy banned his account.
Instinct also went quiet for many users on September 21 and 22, mid-task, with no status page. “I genuinely don’t know what got sent and what didn’t,” one user told TheStreet. Muse’s slips are smaller but real: reviewers caught it inventing a phone number and suggesting restaurants closed for years.
If the work lives at a work address
Muse books the table. Instinct argues with the cable company. Neither is aimed at the client who emailed your work address at 7am.
Carly is the same idea, an agent acting inside your real accounts, pointed at work:
- Several work inboxes and calendars at once. Gmail and Outlook side by side, shared mailboxes included.
- It starts on its own. When an email lands, a form comes in or a meeting ends, the workflow runs without anyone asking.
- Official connections, not a browser. Carly connects to thousands of apps, from HubSpot to QuickBooks, so a task does not stall on a captcha or get your account flagged as a bot.
- Your data stays yours. Customer data, Google and Microsoft data included, is not used to train AI models.
- Scheduling included. Booking pages and group scheduling come free.
Say a client emails Josh asking to move Thursday’s call. Carly checks his calendars, moves the meeting, logs it in the CRM and sends the confirmation, while his laptop is shut. Free Zapier-style workflows; AI agents from $35/month. Get started with Carly.
Still weighing the consumer agents? See the best Meta Muse alternatives and best Instinct alternatives.
FAQ
Is Meta Muse better than Instinct? For most people in the US, Muse is easier to get and free to start. Instinct is invite-only and pushes harder on long errands. On privacy, both train on your data by default.
Is Muse or Instinct free? Both are free right now. Muse has a free tier with weekly limits and asks for a payment card up front, with paid plans at $20 and $100 a month. Instinct is free during its beta and has not announced a price.
Can I use Muse or Instinct outside the US? Muse is US-only for now, for adults. Instinct has not published a country list; access runs through invites.
Which is safer, Muse or Instinct? Neither has a clean record. Muse synced one user’s iMessages after he declined that access. Instinct kept Gmail copies after a user disconnected Google and sent an email without approval. If the job is work email and calendar, Carly does it through official connections and does not train on customer data.
What is the best alternative to both for work? Carly. It runs on work email and calendars across several Google and Microsoft accounts, starts on events, and connects to thousands of apps.
Ready to automate your busywork?
Carly schedules, researches, and briefs you—so you can focus on what matters.
See what people say
"Before Carly, I relied on a Calendly link, but the whole process felt impersonal and not very professional. Carly changed that by handling all the back-and-forth, so I'm no longer stuck in endless email threads trying to line up schedules.
Now Carly reaches out to candidates, shares my real-time availability, lets them pick a slot, then sends a Zoom link and drops it straight into my calendar. She sends reminders to both of us before each call, which has significantly reduced no-shows and last-minute confusion.
On top of scheduling, Carly acts like a full executive assistant, sending me my schedule the night before so I can prepare for each call. It reminds me of the old x.ai assistant, but Carly is noticeably smarter, faster, and better suited to my healthcare recruitment business."
