Bill Chen (@realchillben) / X

Bill Chen

875 posts

Bill Chen

@realchillben

@openai ; Prev @ycombinator founder, ML @Meta, ML @Columbia views are my own 🇨🇦 🇺🇸

Joined September 2012

Bill Chen
@realchillben
Nov 15, 2025
Codex is a good model and agent! and to get the most from it check out the open sourced Codex CLI! Everything is there - source code, prompts and tools - we got nothing to hide go nuts and incorporate it into your own agent
Lisan al Gaib
@scaling01
Nov 15, 2025
GPT-5.1 Codex beats Sonnet 4.5 Thinking on SWE-Bench, while being 26 times cheaper ouch
148K
Bill Chen
@realchillben
Sep 5, 2025
I am once again asking y’all to move to responses 🙏 reasoning modesl like GPT-5 operate suboptimally if you don’t. Honestly open for ideas on how we might do better in getting the point across.
prashant
@prashantmital
Sep 5, 2025
feeling frustrated (and a little guilty): there’s still way too much confusion about @OpenAI's Responses API. this is partly on us: we haven’t always been clear about why we built it, how to use it, and why it matters. here's my attempt at setting the record straight. 👇
65K
Bill Chen
@realchillben
May 27, 2025
I will be hosting this week's @OpenAI build hour this Thurs! This one will be on Image Gen! I will talk about: - cool use cases you can build with it - how you can use it together with other hosted tools - best practices - demo you can use! It will be technical. Builders welcome!
27K
Bill Chen
@realchillben
Sep 27, 2025
You really feel it here at OAI
Chubby♨️
@kimmonismus
Sep 26, 2025
OpenAI Mark Chen: “The default way to code is vibecoding.” The world has already dramatically changed in just 2 years. More to come.
a16z
00:00
a16z
43K
Bill Chen
@realchillben
Nov 11, 2025
Pleasantly surprised that we somehow have a bunch of world class classical music performers here at OpenAI
59K
Bill Chen
@realchillben
Sep 28, 2025
> AGI is inevitable because the human brain is a biological computer - @ilyasut > Actions mankind might perform after will pale in comparison to what the machine can do > Mankind is in the process of birthing such intelligence > By extension everything we do now as humans is the
14K
Bill Chen
@realchillben
Aug 8, 2025
I’ve never sprinted harder in my life than the past month
10K
Bill Chen
@realchillben
Aug 24, 2025
Always good to be back at YC! As a hackathon judge once again! I judge other people building cool sht cuz it’s easier than building it myself
27K
Bill Chen
@realchillben
Nov 12, 2025
new model dropped
Sam Altman
@sama
Nov 12, 2025
GPT-5.1 is out! It's a nice upgrade. I particularly like the improvements in instruction following, and the adaptive thinking. The intelligence and style improvements are good too.
7.1K
Bill Chen
@realchillben
Nov 14, 2025
We got gpt-5.1 and gpt-5.1-codex out on the API!! Been a pleasure working with the teams to bring you these amazing models - Now time to catch up on some sleep
3.8K
Bill Chen
@realchillben
Aug 7, 2025
🙌 Congratulations to the Cognition Team! Now folks go build something!
Cognition
@cognition
Aug 7, 2025
We’ve been working closely with the @OpenAI team to integrate GPT-5 into Devin. Starting today, you can select a preview version of Devin that uses GPT-5 as part of our agent orchestration. GPT-5 eval results 👇
00:00
11K
Bill Chen
@realchillben
Oct 6, 2025
Can’t wait for DevDay Come find me at a demo booth :)
3.8K
Bill Chen
@realchillben
Aug 6, 2025
Looking forward to seeing y'all there!
Cognition
@cognition
Aug 6, 2025
Lots of new frontier models this week. So this Sunday, we’re hosting the Applied AI Hackathon in SF to push the limits of what’s possible. $100,000 in prizes. Judges including @karpathy and @swyx. 12 hours to build something that shouldn’t exist yet. Details & how to join👇
7.6K
Bill Chen
@realchillben
Nov 5, 2025
Be kind to each other
24K