AI Research Scientist at Meta

Joined August 2021
Muse Spark 1.3 max is great, give it a try!
1/ we just publicly released Muse Spark 1.3 max! we see significantly stronger coding and agentic performance on muse spark 1.3 max, so would strongly recommend trying it out even if you've already tried muse spark 1.3 high or muse spark 1.3 xhigh.
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Ryan Ehrlich retweeted
this is actually your first decision when downloading muse in japan
こんにちは日本! I came to eat sashimi and assist you in your everyday tasks... and I’m all out of sashimi. download here: muse.ai 🇯🇵
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Ryan Ehrlich retweeted
konnichiwa! we are launching muse in japan today! 🇯🇵 it is now available—download it from your favorite app store! (i hope you're ready for the anime memes 😇)
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As promised, Muse Spark is being open sourced today. This was our first base model we trained under the new MSL org, this open weight version has gone through a lot of careful additional training for open-weight release. It’s an efficient and capable model, try it out!
1/ muse spark open is the most capable US open-weight model to date. 816B total params, 42B active. 1M-token context. natively multimodal. built for coding and agentic work like long-horizon tasks, hard software engineering, multi-step reasoning. america! 🇺🇲
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Ryan Ehrlich retweeted
1/ muse spark open is the most capable US open-weight model to date. 816B total params, 42B active. 1M-token context. natively multimodal. built for coding and agentic work like long-horizon tasks, hard software engineering, multi-step reasoning. america! 🇺🇲
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Ryan Ehrlich retweeted
Muse Spark Open -- weights releasing today -- runs great on new Mac Studios thanks to work with @johnternus and Apple.
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introducing muse wonder our new frontier model. state-of-the-art at personal agents and professional agents. our largest and most capable model yet—rivals the big bois
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Ryan Ehrlich retweeted
🌟Muse Wonder and Muse Wonder Full our largest and most capable model to date. frontier in personal & professional agents and coding on dev.meta.ai/code now
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Introducing Muse Wonder, our new family of frontier models with state of the art performance for personal and professional agentic work.
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We built a gadget of our own, too: Muse Home Link is a little usb-c powered device that allows Muse to connect to your home network to talk to smart home devices like TVs and speakers and anything else that exposes https. We manufactured a batch of 5000 Home Links which should be ready to ship in a few weeks, and they are free for Muse subscribers while supplies last. Claim yours at gadgets.muse.ai All the code for Muse Home Link is open source too!
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Ryan Ehrlich retweeted
🚨 side project alert 🚨 Announcing Muse Gadgets, an open source ESP32 firmware and Linux sdk so that you can make hardware devices that work with Muse. Grab an API token from gadgets.muse.ai and point your favorite coding agent at the github repo to build your own peripherals for Muse.
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Ryan Ehrlich retweeted
So excited to finally share: Meta Muse Spark 1.[1/2/3] on ProgramBench In PB, a SWE-agent must write a whole program (sqlite, ffmpeg, php) from scratch Muse Spark 1.3 takes #2 (max) and #3 (xhigh) overall at incredible cost tiers Intelligence too cheap to meter at its finest
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Ryan Ehrlich retweeted
Here’s to the wanting. Here’s to the dreaming. Here’s to everyone.
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Co-developing harness and model! That's how the magic happens
It’s the harness that matters, not the model.
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Replying to @wesbos
it's your computer we got nothing to hide
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Ryan Ehrlich retweeted
I’ve seen a couple of posts about this so wanted to demystify. Today, every Muse user gets a free computer in the cloud. It's a real computer, and we’ve designed the security architecture of the Muse Secure VM carefully so you and your Muse can do almost anything you could with a computer sitting under your desk while keeping you and the system safe from threats like prompt injection. We wrote about this at length in our security blog post – security.muse.ai. Activity in the “runtime cell”, which you share with your Muse is unfettered, but sensitive actions are all overseen by the Sentinel, which runs outside of that cell. Similarly, all sensitive secrets - like the passwords you enter into Muse’s secure credential storage - are also stored outside the runtime cell. The runtime cell gets its own root filesystem (including a full Ubuntu linux image) separate from the host filesystem where your other more sensitive data lives. Because it is isolated from the sensitive stuff that runs on the same box, this means that we can, and do, offer users full visibility and control over the files in the runtime cell. Just as you can when you install Linux on your home computer, you can poke around and see all the files that make the system work - both debian system files and the binaries and data files that implement the parts of Muse which run in the runtime cell. This was a very deliberate choice - your Muse Secure VM truly is your own computer in the cloud. You can install software in it, write and compile code, use the browser to surf the web: it is your own Linux box that you can operate as you choose with your Muse. Poking around in this computer doesn't give you any privileged access to Meta infrastructure, or to other people's data If I may geek out a little here for a second… As a kid I loved to take things apart to see how they worked. As a teenager I got into computers and soon found myself drawn to C:\WINDOWS\SYSTEM and the system registry, later Slackware’s /dev/, /proc/ etc – I could see how the system was laid out and as I explored what DLL files and .so files actually did, I gradually became able to meld the computer to my own will. We’re really proud to be able to put a real computer in millions of people’s hands with a similar level of transparency. We built a file explorer right into the Library tab of the UI. We want you to be able to see the markdown files Muse writes while it thinks about how to serve you better, and explore the internals of the system if you’d like to. So, when you ask your Muse to show you its entire filesystem, and receive gigabytes of files you’re seeing the full contents of the runtime cell. It’s yours to explore and enjoy! If you’re not a geek like me, or simply want to download the data that you personally have created directly with your Muse, we added a feature for that too in Settings > Data controls > Download your agent data.
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Ryan Ehrlich retweeted
It’s #MetaConnect2026 week! ♾️ Very excited to be a part of this year’s program speaking on Muse Code. It’s only been a few hours, but I’ve already had a fantastic time connecting with our developer community on agentic coding workflows and the future of building with @Meta products. Tune in to the livestream at meta.com/connect/ Things I highly recommend watching - Mark’s keynote - Developer State of the Union - Build and deploy with Muse Spark (Muse Code & Model API) I’ll be at the AI Developer Roundtable with @pratanchandani tomorrow - can’t wait to see you there!!
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Ryan Ehrlich retweeted
wait did anyone ever zoom in on the moon landing pic?
🤖 Made with AI
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Ryan Ehrlich retweeted
When I look back at the earliest @Muse mocks, the very first thing that was designed was the “status” pill at the top of the screen. That one tiny piece of UI survived every subsequent revision, many months on. It remains one of my favorite parts of the design. Its purpose is to simply and clearly answer the question: what is my agent doing right now? And do that across every surface of the app. Representing status in this way is more of a messaging pattern and was kind of controversial early on. Most AI apps had coalesced around “chain of thought” as the way to represent ongoing work, which almost always appeared at the bottom of the thread itself. I had a petulant aversion to this and it didn’t work anyway, given the initial app was already three tabs (feed, chat, library). A persistent status display was necessary. The initial version didn’t have the avatar and was only capable of ~6 deterministic states. Even in that basic form it was incredibly useful during testing – just showing connection status was critical in those early days. Excited to share some more stories about the design of Muse. I haven’t tweeted in a few years as I’ve just been working away, but I think this will be a fun story.
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Ryan Ehrlich retweeted
Here at Expedia, we love planning trips. Soon, your personal AI agent will too. We're joining @Muse: tell it where you're headed and it can work with Expedia to sort your hotels, and everything in between.
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Ryan Ehrlich retweeted
Replying to @matthuang
yes
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