Bill Chen
@realchillben
Applied @openai ; Prev @ycombinator founder @Retool @Meta ML @Columbia
Was in a lot of threads lately and had a few coworkers ask me if I am even sleeping. The funny thing is I’ve never slept better. Realized the value of sleep way too late in my life - you perform 10x better if you sleep. Thats high ROI
It will be a good model :)
woke up early on a saturday to have a couple of hours to try using our new model for a little coding project. done in 5 minutes. it is very, very good. not sure how i feel about it...
To put it mildly, the past week at Windsurf has been crazy. There have been a lot of different rumors and reports, so I want to share a transparent account of how it actually went down. Before I start, I just want to say that Varun and Douglas were great founders and this…
Feel the AGI. Never felt closer to the world where AI create novel human knowledge in addition to mastering what already exists Tomorrow we will feel even closer
1/N I’m excited to share that our latest @OpenAI experimental reasoning LLM has achieved a longstanding grand challenge in AI: gold medal-level performance on the world’s most prestigious math competition—the International Math Olympiad (IMO).
Best way to have fun is to give a shit and find people who equally gives a shit
2025 is the year of agents and here is an agent in all definitions of the word
ChatGPT can now do work for you using its own computer. Introducing ChatGPT agent—a unified agentic system combining Operator’s action-taking remote browser, deep research’s web synthesis, and ChatGPT’s conversational strengths.
Becoming an RL diehard in the past year and thinking about RL for most of my waking hours inadvertently taught me an important lesson about how to live my own life. One of the big concepts in RL is that you always want to be “on-policy”: instead of mimicking other people’s…
It’s a privilege to welcome Windsurf to Cognition. Here are more details in the note I sent to our Cognition team this morning: Team, As discussed during our all-hands, we are acquiring Windsurf. We have now signed a definitive agreement and we couldn’t be more excited. Here’s…
Cognition has signed a definitive agreement to acquire Windsurf. The acquisition includes Windsurf’s IP, product, trademark and brand, and strong business. Above all, it includes Windsurf’s world-class people, whom we’re privileged to welcome to our team. We are also honoring…
My weber kettle grill probably has resulted in the most amount of enjoyment per dollar and is therefore the best investment I’ve ever made.

Quote of the week goes to Francois Chollet: We are now closer to the year 2100 than to 1950.Also closer to 2050 than to 2000. Time to start acting like it.
Lmfaooo
Soham also used to guilt trip me for his being slow on PRs when India Pakistan thing was going on, all while he was in Mumbai. Next person should hire him for the Chief Intelligence Officer role.
staycations are underrated: have the week off and staying in the city (SF) it has only been a day and I feel more rested than most of my vacations in the past
People think Garry should run San Francisco. But they're wrong--he shouldn't. @garrytan is going to become President of the United States. 🫡
What determines if a startup today makes it or not? Speed, focus and distribution.
Thought provoking points from @karpathy at AI Startup School today. Made me see LLMs in a whole new light.
Come watch us build realtime voice agents in real time!
our next @openai build hour will cover a new RealtimeAgent feature for voice agents & improvements to our speech-to-speech model. as always, we'll be live building. tune in tuesday at 10am PT!