Is Meta Muse open source now, and is it in WhatsApp?

What did Meta actually open source with Muse?

Meta open-sourced the plumbing, not the brain. On October 2, 2026, the company released Muse Gadgets, a project that gives tinkerers free firmware and software development kits for building their own devices that talk to Muse, its personal AI agent. The code ships under the permissive Apache 2.0 license, so anyone can use it, modify it and build on it. The model itself isn't included. The gadgets are front ends, meaning screens, microphones, speakers and sensors, that pass your requests to Muse running in Meta's cloud and then show or speak the replies. Meta's product lead pitched the whole thing as a side project, and that tells you something about its scale.

There are two kits. One targets ESP32 microcontroller boards, the cheap chips inside countless smart plugs and hobby projects, and covers screens, audio in and out, and sensors. The other is a Linux kit that turns a Raspberry Pi or a spare Linux box into a Muse device. Meta paired both with starter builds made from off-the-shelf parts: a round touch screen, a color e-ink display for morning briefings and shopping lists, a pocket-sized stick computer, a little desk companion and a home voice speaker kit. The idea that grabbed the headlines, a Muse stick that plugs into your TV's HDMI port, is listed as coming soon. You can't build it today. Before you can use any of these kits, you request a developer token from Meta.

Alongside the code, Meta built one gadget of its own. Muse Home Link is a small USB-C-powered box that joins your home network and lets Muse talk to the smart gear already on it, including speakers and smart TVs. Meta made 5,000 units and is giving them free to Muse subscribers while supplies last. They're due to ship later in October, and there's a waitlist for everyone else. Some coverage framed the release as Meta handing appliance makers a free AI to build into toasters and televisions. The more careful reporting describes something much smaller: kits for hobbyists and developers. This announcement won't put Muse inside your next fridge, even though that's plainly where Meta would like to end up.

Does 'Muse code free' mean Muse itself is free?

No. Free code and a free Muse plan are two different things. The open-source release means you don't pay Meta for the firmware, but every device you build still needs a Muse account behind it, and Muse's usage rules and pricing apply to everything you ask it. It's a bit like being handed a free phone case. Nice to have, but it doesn't come with a phone plan. The assistant's intelligence, your connected apps and your history all stay on Meta's side. If Meta changes its tiers, its limits or the countries it serves, your homemade e-ink display changes along with them, even though you soldered it together yourself.

Muse already has a free tier for everyday use, and paid tiers for heavier use, reported at $20 and $100 a month. There's a catch many people miss: Meta asks for a payment card at signup even on the free tier, because charges kick in as usage climbs. Muse is free until you lean on it, and then it isn't. You also have to be 18 or over and sign in with a Meta account. Muse Gadgets changes none of that. If you're picturing a cheap TV stick that gives you an unlimited AI agent for nothing, the code won't get you there. The account rules still decide what you get.

There's one more naming trap. Search for free Muse code and you'll also find Muse Code, a separate developer offering Meta announced in late September as part of its new enterprise platform, next to a Muse API and a business agent. That one is aimed at companies building on Meta's technology, not at people building gadgets at the kitchen table. Muse Gadgets is the hobbyist kit. Muse Code belongs to the business developer bundle. Neither is the Muse agent you chat with on your phone. So if a headline or a friend tells you Meta made Muse free, ask which of the three they mean. Each answer means something different for what you can actually do.

Does the open-source release put Muse in WhatsApp?

No, and it didn't need to, because Muse has been in WhatsApp since launch. When Meta opened Muse to adults on September 8, 2026, WhatsApp was one way in, alongside the iOS and Android apps and the web. You message it like a contact, then connect your other apps one at a time and choose how much access each one gets. The gadget code is about new hardware that talks to Muse. It doesn't add chat apps or countries. Nothing in the October release changes who can open a Muse chat in WhatsApp. If you couldn't message Muse on October 1, you still can't, however many Raspberry Pis you own.

The real limit is geography. Muse launched for US adults, and more recent reports say it has reached Canada as well. Meta's own help pages still say it's in limited testing and not yet available everywhere. If you're in Israel, the UK, Spain, Brazil or anywhere else outside North America, you're still waiting, and Meta hasn't published dates for a wider rollout. That hurts in WhatsApp-first countries, where people run their businesses, families and football clubs from group chats. There's some irony in it: the places that use WhatsApp most heavily are the ones shut out of the WhatsApp version of Meta's flagship assistant. For many readers, that's a bigger deal than any gadget news.

What about Muse on other Meta devices? Meta says Muse is coming to its AI glasses in the coming months, and Home Link already reaches smart TVs and speakers on your network. So a US subscriber may soon be talking to Muse through glasses, a desk display, the TV and WhatsApp, all tied to one account. For everyone else, that ecosystem exists only in press releases. If that's you, you have two options: wait for Meta, or use an assistant that already works in WhatsApp wherever you are. We wrote a short, practical guide to what to use when Meta Muse isn't available in your country if you'd rather not wait.

What privacy questions does a Muse in every gadget raise?

The main question is simple. Every new Muse device is another microphone, screen or sensor feeding your life into the same account. A personal agent is only useful when it can reach your calendar, your messages, your shopping and your home, and each gadget you add widens that reach. A desk display that reads out your morning briefing knows your schedule. A Home Link that talks to your TV knows what you watch and when you're home. None of that is shocking on its own. Put it all in one profile run by a company that makes its money from ads, though, and it deserves more thought than a fun weekend build usually gets.

Muse's first month gives you good reason to read the permission screens carefully. Early users reported the agent mentioning private messages they believed they hadn't shared. Meta responded that the Mac connector involved is optional and needs explicit system-level access, and Apple has since said it will tighten Mac controls on AI agents. Other reporting raised concerns about Muse building profiles of friends and family who never signed up. Meta also pulled a Muse image feature days after launch following a privacy backlash. None of this proves that any gadget misbehaves. It does show how quickly an agent with broad access can surprise the people who use it.

Here's our view: for most people, an assistant you message on purpose beats one built into every appliance. When you have to send a text like 'Remind me to renew the car insurance on the 14th,' you decide exactly what it knows. An always-on gadget reverses that default. It's built to listen and watch, and you have to remember to opt out. Open-source firmware helps a little, since anyone can check what the device itself does. But the part that matters most, what happens to your data on Meta's servers, isn't in the published code. You can inspect every line of code on the gadget and still have no idea what Meta's servers do with your data.

What can you use inside WhatsApp today instead?

If Muse isn't available where you live, or you'd rather not connect an agent to your whole house, Agent Sonic is a personal assistant that already lives in WhatsApp. You message it like any other contact. There's nothing to install, no gadget to build and no dashboard to check. Text 'Remind me to call the accountant every Monday at 9' and it sets a recurring reminder that arrives in the same chat you already open fifty times a day. Send a voice note from the car and it becomes a to-do. It keeps notes and remembers what you've told it, so 'What was the name of the tiler Yossi recommended?' gets a real answer weeks later.

It does a lot more than reminders. Forward a contract as a PDF and ask 'What are the deadlines, and is there anything I should worry about?' and you'll get the key terms back in plain English. Add it to a WhatsApp group and it can sum up what you missed, run a poll, keep a shared list, split expenses or remind the team about Friday's timesheets. It searches the web live, so 'What time does the tax office close today?' works. It also creates Google Calendar events, updates Sheets and Docs, and can read from a Notion knowledge base. You don't need a smart TV or a soldering iron for any of it, just the phone already in your pocket.

The Pro plan adds one more feature, outreach tasks. It's in Beta and may be paused from time to time. Say 'Ask Dana when the invoice will be ready and let me know,' and Sonic shows you the exact first message before anything is sent. Reply 'yes' and it writes to Dana from its own number, introduces itself as your assistant and reports the answer back to you. You can run one task at a time and contact up to three people a day, and those limits are deliberate. Muse is a big bet on the connected home. Sonic is a narrower bet on getting your admin done in the chat you already use. If that's the trade you want, get access to Agent Sonic and you'll receive its number and a quick onboarding.

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