chief ai officer @meta, founder @scale_ai. rational in the fullness of time

Joined June 2012
309 Photos and videos
Pinned Tweet
1/ today we're releasing muse spark, the first model from MSL. nine months ago we rebuilt our ai stack from scratch. new infrastructure, new architecture, new data pipelines. muse spark is the result of that work, and now it powers meta ai. 🧵
746
1,191
10,378
4,555,697
try out the new voice AI in the meta ray-bans!
Meta AI in the Ray-Bans has gotten very good. Walk down the street, ask a question about something you’re looking at, discuss it. Voice is natural and fast, and isn’t interrupted by environmental sounds. Phone stays in your pocket. Feels freeing and a direction AI will take.
40
25
252
68,168
celebrating @scale_AI’s 10th birthday this month! I’m so proud of the team for building a $1B revenue juggernaut powering leading AI labs, the US Dept of War, and Fortune 500 enterprises.
This month we turn 10. The hard work started in 2016, and it hasn’t stopped. Shortcuts are for losers. Winners welcome. scale.com/careers
40
23
372
44,198
incognito chat with meta ai coming to WhatsApp Meta AI app! people use AI to discuss personal topics and we want to make sure they ca do that privately. excited about this one!
Meta just launched Incognito Chat with Meta AI - the world's first truly private way to chat with AI. But I had a lot of questions. How does it actually work? Isn't this contradictory to Meta's business model? What assurances do we have that this is airtight? I had a chance to speak to the Head of Whatsapp @wcathcart and Meta's VP of AI Products @vishalshahis to learn more.
58
24
344
103,637
we launched some muse spark updates yesterday, including muse spark voice and live AI w your camera in Meta AI app muse spark rolling out to glasses 😎 check them out!
Today we’re introducing Meta AI Voice Conversations powered by Muse Spark that let you talk naturally to Meta AI (interrupt, switch topics, or swap languages), and as you talk, Meta AI can generate images and pull up recommendations from Reels, maps, and more. We’re also bringing live AI to the app, so you can point your camera at the world and ask about what you’re seeing in real time. about.fb.com/news/2026/04/in…
57
53
578
123,422
congrats to the @scale_AI team! big moves, and lots more to do to support the mission 🫡🇺🇸
Scale AI wins a $500M DOD contract through the Chief Digital and AI Office to help sift data and assist in decision-making, after receiving a $100M deal in 2025 (@jenjudson / Bloomberg) (Visit Techmeme dot com for the link and full context!)
25
13
386
63,222
AI contenders vs AI pretenders in enterprise comes down to reliability
24
21
373
148,827
welcome Assured Robot Intelligence (ARI) to MSL! excited to build physical with @LerrelPinto @xiaolonw and the whole team!
Excited to share that Assured Robot Intelligence (ARI) has joined @Meta to help build the future of humanoid intelligence! When we started ARI one year ago, our mission was clear: achieve physical AGI. Through deep customer engagements and real-world deployments, it became clear to us that serving the massive opportunity ahead requires training a truly general-purpose physical agent. We believe this agent will be humanoid — and that scaling will come from learning directly from human experience, not teleoperation alone. Meta’s ecosystem brings together the key components needed to make this vision possible. We will be joining Meta Superintelligence Labs (MSL) to help bring personal superintelligence into the physical world. We are incredibly grateful to the brilliant minds, robotics researchers, engineers, partners, and supporters who have worked with us on this journey. Thank you to our investors and angels, led by @aixventureshq , for believing in our mission. This is just the beginning.
20
43
597
96,147
i really appreciate when people develop sophisticated views about our models and their relative strengths! it is certainly a labor of love
Muse Spark is actually insanely good. IMO, for my uses, the only advantage Claude . ai has on it currently from dozens of hours working with both is 1) coding and 2) context retention within and across chats. Built a little app to learn - I've been using Claude as project manager back end architect, while Meta handled front end design / architecture / creative problem solver while Claude Code handled build. Claude is arrogant, full of shit often, and loves to waste time and spin wheels and pontificate. Muse Spark is no-nonsense, ship first mindset with incredible taste and risk taking ethos. It's like you are plugged directly into $META hivemind. Great job @alexandr_wang - I've enjoyed using Muse Spark more than any model I can recall. If only context were better!
46
22
482
96,251
Thank you @RonConway for accelerating technology, the future, and humanity. F*ck cancer.
"Ron discovered how to be the investor of the future by accident. He didn't foresee the future of startup investing, realize it would pay to be upstanding, and force himself to behave that way. It would feel unnatural to him to behave any other way." paulgraham.com/ronco.html
13
24
352
71,221
As we develop more capable models at the frontier, MSL is committed to safety and preparedness for AI. To demonstrate this commitment, we will be publishing preparedness reports for our models, in line with our new Advanced AI Scaling Framework. See our Muse Spark report below:
🚀 Muse Spark Safety & Preparedness Report for Meta AI is out. We start with our pre-deployment assessment under Meta's Advanced AI Scaling Framework, covering chemical and biological, cybersecurity, and loss of control risks. Our assessment flagged potentially elevated chem/bio risk, so we implemented safeguards and validated mitigations before deployment - bringing residual risk to within acceptable levels. Beyond the Framework, we also share findings and early explorations of model behavior (honesty, intent understanding, etc.), jailbreak robustness, eval awareness, and more. We're sharing this report to give a closer look at how we evaluate advanced AI safety. Always more work to do, and we welcome feedback from the community. ai.meta.com/static-resource/…
34
38
596
76,975
this is not investment or tax advice… but very cool!
I took the new Muse Spark to the ultimate test: filing my taxes - 3 different workplaces, consulting, stocks, foreign bank accounts and assets, and kids. One hour later, I had everything done. AGI is here... cc: @alexandr_wang
25
14
352
71,782
Alexandr Wang retweeted
Apr 14
Fun visually-grounded 3d visualization with Muse Spark - by asking the model to generate a 3d visualization of how much each component cost on a xbox 360 motherboard (and put the bar on the component).
5
25
252
41,765
Alexandr Wang retweeted
Apr 13
Muse Spark is agentic, which means you can ask it to leverage different test-compute scaling methods to improve quality. Here I ask the model to use parallel subagents to do counting and the results are greatly improved! meta.ai/share/aD4KAPeVN9u
Apr 12
The coolest thing Meta AI's Muse Spark can do by far is counting objects! As you can tell, it's far from perfect. They call it "visual grounding" and it can count objects and do bounding boxes. I've been playing with the new model and here's what I think so far: Good stuff: – Incredible at vision. It's ability to read text in images is the best I've seen. – Really high quality at web design. It's the only model I've seen that uses Unsplash, OpenLibrary and other images by default. – It's free! You don't pay to use Muse Spark Thinking. Bad stuff: – Meta's classic playbook of growth tactics are dodgy. They're sending Instagram notifs to people's friends without their consent. Their app ranking jump is not organic. – Reasoning itself is pretty solid but not best in class. It can do pretty advanced math and science problems. The long term threat here is Meta has distribution and has the ability to give their model away for free, which makes them a formidable threat to the big AI labs, particularly in consumer.
12
16
164
39,607
i find muse spark is very good at data analysis—both finding relevant open-source data and analyzing it. for example, here's my results for analyzing global share of GDP over past century: meta.ai/share/cw54skLBSqy
57
32
595
72,652
check out Contemplating mode for your most complex reasoning queries!
Not usually a Meta AI user, but wanted to give them a shot after the latest model release (it's free anyway). So I installed the app on my desktop, and noticed "contemplating" mode (didn't see that on the mobile app btw). When I asked a question, 16 agents simultaneously started working on the question which looks pretty cool!
41
16
299
38,782
MSL *really does* run like a startup :) join us if that sounds exciting to you!
Apr 11
Crazy to see the positive response to Muse Spark. I joined Meta in Dec and was surprised how startup-y MSL feels. Dec through now, through the holidays was literally nonstop building for me. Everyone on the team cares. People want to do great work
43
19
649
166,266