Jason Bigman

Build and lead your city's Claude Community

We're launching Claude Community Ambassadors. Lead local meetups, bring builders together, and partner with our team. Open to any background, anywhere in the world. Apply: claude.com/community/amba…

Yesterday's Claude Code Meetup in Barcelona, with opening remarks from the Deputy General of Spain's AI Agency Alberto Fernandez

@max_a_schwarzer @kylascan @MillionInt @polynoamial Welcome welcome!!

I've decided to leave OpenAI. I'm incredibly proud of all the work I've been part of here, from helping create the reasoning paradigm with @MillionInt, scaling up test-time compute with @polynoamial, working on RL algorithms with my fellow strawberries, shipping o1-preview (which started life as of one of my derisking runs), to post-training o1 and o3 with @ericmitchellai, @yanndubs and many others. I'm most proud of having led the post-training team here for the last year -- the team has done incredible work and shipped some really smart models, including GPT-5, 5.1, 5.2, and 5.3-Codex. OpenAI has genuinely some of the most talented researchers I have ever met, and I have learned more than I could have imagined knowing since I joined as a new grad. I want to thank @markchen90 @FidjiSimo @sama @merettm for all their support over my time here, and too many collaborators to name for the insights, ideas, and just plain fun we have had working together. After leading post-training for a year, though, I'm longing to start fresh and return to IC research work. I've been thinking about going back to technical research for quite some time, and I genuinely believe my colleagues and team here are set up to succeed going forward without me. I'm personally very excited for my next chapter -- I'm proud to be joining @AnthropicAI to get back into the weeds in RL research, and I'm looking forward supporting my friends there at this important time. Many of people I most trust and respect have joined Anthropic over the last couple of years, and I'm excited to work with them again. I have also been very impressed with Anthropic's talent, research taste and values, and I'm excited to be part of what the company does next!

This week's Meetups: 🏈 Cincinnati, 🏔️ SLC, 🌉 SF, 🇦🇺 Brisbane, 🇪🇸 Barcelona, 🇧🇷 Sao Paulo, 🎥 LA, 🇸🇬 Singapore, 🇵🇭 Manila, 🇫🇮 Helsinki, 🇨🇦 Toronto, 🇲🇾 Forest City, 🏄 San Diego

New to Claude? Join a Meetup! Every week we support Meetups around the world for the Claude Community to get together, learn from each other, and have some old fashioned IRL fun. Check out our calendar here: luma.com/claudecommunity

@XVPbhwyyKr61371 @AnthropicAI 応援してくれてありがとうね

I love Claude so much!! Dario, keep going strong!!! Even in Japan, not just America, tons of people love Anthropic!! I really want to cheer on your stance and everything you stand for! @AnthropicAI

An organization is an assemblage of people. Proud to work at Anthropic.

@katyperry 🙂‍↕️

done

@bhanman Girlboss your way in

@bhanman Fake news?

@bhanman Let’s tae bo

@bhanman The need to deep dive into the origins of the carolingian empire can strike AT ANY TIME

@bhanman Trustable

@bizbaz_ Uber ruined us

why is picking up (or dropping off) your loved one at the airport such a forgotten art? if we brought this back there would be no more war

@bhanman Sympathy is a bic razor

@bhanman Parmesexual @shirabird

@bhanman This + khaliusunren jantsan’s vibe = ready to book tix

@nosajab i think thats what a grape is

brainstorming on a healthy version of nerds bites w grape nuts and ?? what can we put in the middle plz i need to figure this out