What Is Meta Muse? The Personal Agent, Spark, Glimmer and Connectors Explained

Meta Muse is Meta's personal AI agent. It runs errands, manages schedules, fills forms, books travel, browses and makes purchases, and keeps working in the background after you close the app. It launched on September 8, 2026, runs on Meta's Muse Spark 1.3 model, and is available to adults in the US and Canada.

"Muse" also names the model family around the agent: Muse Spark (the closed model developers can call), Muse Glimmer (open weights you run yourself), Muse Code (a terminal coding agent) and connectors, which let the agent act inside services like Gmail, Plaid or Ticketmaster. That is why headlines about "Muse" often talk past each other. (It also isn't the band or the meditation headband.)

Meta Muse at a glance

	Meta Muse (personal agent)
Made by	Meta
Launched	September 8, 2026
Model	Muse Spark 1.3
Where it runs	A dedicated cloud VM per user (the Muse Secure VM)
Apps	iOS, Android, web at muse.ai, WhatsApp, and Mac since Sep 17–18
Countries	US, and Canada since Sep 18; 18+
Price	Free with limits; Power $20/month; Max $100/month (Meta)
Downloads	More than 3.4M by Sep 25, per Sensor Tower (TechCrunch)

How does Meta Muse work?

Think of Muse as a worker with a brain, a private computer, a set of keys, and a supervisor who holds the keys.

The brain is Muse Spark. The agent is powered by Muse Spark 1.3, Meta's closed-weights model tuned for long-horizon coding and agentic work. It has a 1,048,576-token context window and takes text, image, video and document input (Meta's docs).

The computer is a dedicated VM. Each user gets their own Muse Secure VM, and the agent does its work there with its own browser (Meta's security write-up). Users have poked at it. Greg Ceccarelli got Claude Code running inside his Muse VM and reports 2 vCPUs, about 8GB of RAM and 100GB of disk, with no inbound ports. Peter James had the iOS app zip the agent's filesystem and found soul, identity and memory files in its home directory. Those are the authors' observations, not Meta specs.

The keys are connectors. A connector gives the agent structured access to a service. Meta describes three kinds (help page):

• Directory connectors, reviewed by Meta. The launch set included Gmail, Google Calendar, Google Docs, Outlook, Plaid, Stripe Link, Shopify Catalog, OpenTable, Ticketmaster, Function Health, HealthEx, Withings, Peloton, Duffel and Tailscale (sourced list).
• Custom connectors, which Muse writes itself from any API. Credentials sit in a secure store, and Meta does not review them. One user had Muse build a Linear connector in under a minute.
• Meta's own apps. Facebook, Instagram and Threads connect automatically through Accounts Center.

Any connector can be set to read-only. Where no connector exists, the agent uses its browser, which is how it claimed flight delay compensation from Delta. The full list is in the Muse connectors guide.

The supervisor is Sentinel. A separate authority called Sentinel gates connector actions and network egress. Credential surrogation keeps real passwords away from the model. Prompt injection is handled in layers: model training, labeling of untrusted input, classifiers and human approval. Meta pays bug bounties of up to $300,000 (source). More in is Meta Muse safe.

What can Meta Muse do?

The catalog on this site holds more than 1,000 sourced builds. The personal-agent ones cluster in a few places, and the real use cases page has the long version.

• Money errands. Chandra Bhavanasi reports Muse cut an AT&T fiber bill from $80 to $40. Idobn's receipt audit found a forgotten $100 a month subscription. Joe Devoy says it saved $3,500 a year on car insurance.
• Bookings. Lyn Loi had it plan and book her first Japan trip in about 10 minutes.
• Phone calls. Matt Schlicht's Muse called five Tesla stores at once. When raunaq's Muse called Xfinity, it reached a human but couldn't read a verification text, so it patched him in.
• Files and small apps. Muse can create PDFs, spreadsheets, documents, images and podcasts, which land in the Library tab (Meta help). Users have had it build a workout tracker in about 10 minutes.

Browse the errands and personal agent shelf for about 200 more.

Where can you use Meta Muse?

You talk to the agent on iOS, Android, the web at muse.ai and WhatsApp. Muse for Mac arrived on September 17–18 and lets it work with local files, Messages, Notes, Reminders, Mail and Calendar. Each Mac app can be set to Off, Read only, or Read and interact (help page).

At Meta Connect 2026, Meta announced voice mode, a Realtime Avatar, an email address for the agent, broader Mac computer use, glasses integration, and a pocket device called Muse Charm. On September 25 it opened an early access program for new features.

Outside the US and Canada, there is no date yet for the UK, EU or India, and the region is checked on your account, so a VPN won't help. See using Meta Muse outside the US.

Is Meta Muse free?

Yes, with limits. Meta's help page lists a usage-limited Free tier, Power at $20 a month for 500M Muse tokens a week, and Max at $100 a month for 3B tokens a week (source). The Batch reports the free limit at up to 100M tokens a week. Meta hasn't published how many tasks a token budget covers. Zuckerberg says Meta plans to make money mostly "by taking a small fee from transactions" (TechCrunch). Details in Meta Muse pricing.

The developer side: Spark, Code and Glimmer

• Muse Spark is available through the Meta Model API at https://api.meta.ai/v1, which Meta says is drop-in compatible with the OpenAI and Anthropic SDKs. Standard pricing is $1.25 per million input tokens and $4.25 per million output (pricing).
• Muse Code is a terminal coding agent co-trained with Spark, with subagents in isolated git worktrees and replayable event logs. Plans are $5, $15 and $50 a month (product page). See Muse Code.
• Muse Glimmer is a ~29.6B dense model released on August 10 under Apache 2.0 and distilled from Spark. Meta says it fits in under 20GB at 4-bit (model card). The local and open models shelf is full of people running it, including on a 12GB laptop GPU.

What Meta Muse is not

Not available everywhere. US and Canada only, 18+, and Meta describes the agent and its subscriptions as being in "limited testing".

Not welcome on every site. Amazon blocked Muse from purchasing as of September 20. One user responded by building a cart API Muse reaches over SSH.

Not infallible. Meta's Mac help page warns: "Your agent may be inaccurate or take unexpected actions." Patrick Wardle reported a Mac zero-day on September 21 that let a local app redirect dictation traffic; Meta hot-fixed it the next day. Taylor Arndt found real VoiceOver gaps.

Not proven by its benchmarks. Meta reports Spark 1.3 at 75.4 on DeepSWE v1.1. DataCamp measured a net 12% cost increase on three tasks where Meta claimed about 25% fewer tokens.

Where to go next

• New here: Start Here walks through setup and reading paths.
• Deciding whether it's worth it: the Meta Muse review.
• Designing tasks or connectors: What Is Muse Engineering?.
• Built something? Submit it.

Frequently asked questions

What is Meta Muse used for?

Mostly errands with a clear goal: negotiating bills, cancelling forgotten subscriptions, claiming refunds, booking travel and tickets, and handling forms. It works in its own cloud VM and asks before sending email or spending money.

Is Meta Muse free?

There is a usage-limited Free tier, which The Batch reports at up to 100M tokens a week. Power costs $20 a month for 500M tokens a week and Max costs $100 a month for 3B.

What model powers Meta Muse?

Muse Spark 1.3, according to Meta's launch post. Developers can call the same model through the Meta Model API, Muse Code, and gateways such as Vercel AI Gateway and OpenRouter.

Is Meta Muse available outside the US?

Only in Canada so far, since September 18. Meta hasn't announced dates for the UK, EU or India. You must be 18 or the age of majority where you live.

Can I run Meta Muse locally?

Not the agent. The personal agent and Muse Spark are hosted by Meta. Muse Glimmer is open weights under Apache 2.0 and runs locally through Ollama, LM Studio, llama.cpp, MLX and vLLM.

Is Meta Muse the same as Muse Spark?

No. Muse is the consumer agent; Muse Spark is the model it runs on, which developers can also use directly through the Meta Model API.