Ben Parr (@benparr) header
Ben Parr (@benparr) profile picture

Building @Moltbook at @Meta Superintelligence Labs (acquired 2026). Author, @Captivology. Co-founded Moltbook, @OctaneAI & @TheoryForgeVC. Past: @Mashable @CNET

Bay Area | Join 15k others ➡️
Joined December 2007
Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)Photo by Ben Parr (@benparr)
Hi mutuals! If you’ve missed my recent adventures: – @Mattprd & I sold Moltbook to Meta. We both joined Meta Superintelligence Labs. – Traded NYC for the Bay Area. Deeply enjoying the weather & nature. – My daughter is now 14 months old and pure joy.
16
101
7,053
Ben Parr retweeted
from la playa to the pyramids, so much for Muse to explore! muse.ai, now in México 🇲🇽
54
42
19
465
59,732
Ben Parr retweeted
We built Muse Realtime Voice and Muse Realtime Avatar to keep the voice, expressions and gestures in sync. It responds right away, and you can jump in while it’s talking. Proud of the team that built this!
Introducing Voice. Talk to your Muse and Muse talks back, so you can go from “what should I cook?” to cooking, just like that ✨
15
11
4
198
10,803
It’s been super useful to have convos with my @muse (his name is now Origami) in the car!
🚨MUSE FEATURE ALERT 🚨 muse voice is out for everyone in the US! you can now phone call and video chat with your muse whenever you need. i personally have a sticky situation today, and asked muse for some advice. sage and calm as always ❤️
2
528
It’s one of the things I love about @Muse — it’s not exhaustingly verbose. It gets right to the point so I can keep moving.
muse is built different!! muse team is anti-slop-text
845
this is about to be so many of your muses in singapore
🚨 MUSE ALERT 🚨 muse just touched down in SINGAPORE 🇸🇬 muse's global tour continues 🌏
101
62
9
1,115
70,773
Singapore friends! You can now get your @muse!
🚨 MUSE ALERT 🚨 muse just touched down in SINGAPORE 🇸🇬 muse's global tour continues 🌏
3
20
1,761
Everyone who knows and has worked with @petersellis has been showering him with love today. For good reason. He’s amazing.
I’m joining the team at @X to lead Product. I am a huge believer in @SpaceX's mission to extend human consciousness to the stars, so it’s time to make shitposting multiplanetary. X is the best way to find out what’s happening in the world right now and talk about it. The team has been working tirelessly to make X a better place and product for the people who love it, and many have noticed the recent momentum. My goal is to help accelerate that momentum for our community, new users, and businesses globally by continuing to make this product beautiful and useful. We are twenty years in, but it truly feels like X’s next chapter will be our greatest. I look forward to your ideas and feedback; I’m sure the replies will be measured and magnanimous.
18
1,945
It’s excellent my college team @NorthwesternU is really good this year!
33 yards to the house 🏡
3
7
1,037
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 😇)
211
187
90
2,442
186,365
Rarely do you see a company have so much positive influence on an ecosystem as Foursquare did on the NYC tech scene… especially to have it end like this. Kudos to @dens for writing an eloquent post-mortem that takes on that impact, and its sad final chapter, head-on.
Foursquare was acquired last month. The outcome was disappointing. It's taken me a while to write this, but I think I'm finally done grieving it. Here are some thoughts on our final years, an effort to honor the team who helped build & maintain FSQ's legacy, and my attempt to finally get some closure. teendrama.substack.com/p/som…
6
8
1
131
12,040
Ben Parr retweeted
Great Muse use case unlocked. Now reads all emails and app comms from my kids school and tells me any forms and events I need to know. Been a pain to track for years.
34
7
4
229
51,046
One underappreciated @Muse capability is how great it is at taking mid-turn directions. Many other models and products need a “steer” which often waits for turns to complete. Muse takes these as a normal person would in a chat. Very elegant product work behind the scenes here.
12
6
161
14,381
after an exciting week of launches (muse wonder [full] & muse spark open), i want to write a note of appreciation to the amazing research teams at meta superintelligence labs on reaching such a special milestone ♥️ we started MSL and TBD a little more than a year ago and set a goal of producing a frontier model within a year or so. given where llama4 landed, that was an incredibly audacious goal, and we knew it wouldn't be easy. many people told us it would be impossible. we knew it was unlikely, but still worth doing. a remarkable group of researchers and engineers joined the effort from inside and outside meta. every single person came in, picked up a shovel, and got to work with earnestness and urgency. nobody asked whose job it was. we assembled a team of the most brilliant people i have ever had the opportunity to work with (and remember, i was an HRT intern 🙃). i am surrounded by ambitious, visionary, technically excellent, hard-working, pragmatic, thoughtful scientists, engineers, and product folks—people who will chase a weird loss spike past midnight just because they need to know why. these models are the product of their passion, hard work, and brilliance. somewhat paradoxically, when we started TBD, we set a principle of no deadlines. we knew we had an astronomical amount of work ahead of us—across pretraining, post-training, RL, multimodal, infrastructure, safety, data, AND frontier research. there was no use setting arbitrary timelines—we just had to get to work, be thoughtful, and build the foundations of a frontier research effort in record time. and run after run, this team did exactly that. our researchers are magicians. i can only describe building these models with this team as a wondrous journey of scientific discovery. i am constantly amazed by what we can accomplish with scaling. i will remember this past year for the rest of my life—the late nights, the broken runs, the evals that came back better than any of us dared to hope. watching this team create wonder after wonder has been a true and deep gift. more than just the models we released this week, we have built a machine that builds new models. it often sounds like a cop-out to say labs can just turn the crank to keep scaling, but now i have seen it first-hand. sure, it's a lot of work and a careful process, but we have built a scalable system to keep advancing at the frontier, and i am really proud of how fast this team keeps making these models better. lastly, i get to work with researchers who care deeply about how their work benefits humanity. it's easy to forget when everything is changing so fast, but the whole damn point is to make people's lives better. time and time again, i have seen our researchers, engineers, and product folks build our technology with care so it can truly be good for the world—whether that's building the best models for muse, thoughtfully open-sourcing strong models, or making sure the alignment and security of our systems are rock solid. this is a team of people who never forget there's a real person on the other side of every prompt. thank you to everyone at MSL for being part of this crazy journey over the past year. i'm so grateful for every one of you, and our work is not done!
219
190
42
4,749
504,332
SLOPTOBERFEST! 🎃🍻
LOOK HOW FAR WE'VE COME my official submission to sloptoberfest slopcannon 🤝 muse @boneGPT @alexandr_wang
4
8
15
1,219
Another Thursday at Meta Superintelligence Labs 🪄
Muse Spark Open -- weights releasing today -- runs great on new Mac Studios thanks to work with @johnternus and Apple.
1
1
21
1,011
The history of computing - every frame by code written with @AIatMeta Muse Spark Open on @FireworksAI_HQ 🎆 Check out the full repo and the web page to step inside the film yourself 🧵
Today we’re releasing Muse Spark Open, the most capable US open-weight model to date. Built for coding and agentic work, it excels at long-horizon tasks, complex software engineering, and multi-step reasoning. Key Model Specs: → 816B total / 42B active parameters → 1M token context window → Natively multimodal across text, image, video, audio
4
6
33
2,414
The GOAT of AI memes and shitposting
muse spark open. why 2026 won't be like 1984 
1
4
1,874
The team at @AIatMeta never stop cooking.
Muse Spark Open -- weights releasing today -- runs great on new Mac Studios thanks to work with @johnternus and Apple.
2
19
1,343
Ben Parr retweeted
we are accelerating
12
2
2
135
12,438