RT Jakub Pachocki (@merettm)Very excited about the "First Proof" challenge. I believe novel frontier research is perhaps the most important way to evaluate capabilities of the next generation of AI models.We have run our internal model with limited human supervision on the ten proposed problems. The problems require expertise in their respective domains and are not easy to verify; based on feedback from experts, we believe at least six solutions (2, 4, 5, 6, 9, 10) have a high chance of being correct, and s ...

RT Noam Brown (@polynoamial)After the IMO results last summer, some dismissed it as “high school math.” We think our latest models will remove any doubt that STEM research is about to fundamentally change.Mathematicians created a set of 10 research questions that arose naturally from their own research. Only they know the answers, and they gave the world a week to use LLMs to try to solve them. We think our latest models make it possible to solve several of them.This is an internal model for now, but I’m op ...

GPT-5.3-Codex-Spark is launching today as a research preview for Pro.More than 1000 tokens per second!There are limitations at launch; we will rapidly improve.Sam Altman (@sama):We have a special thing launching to Codex users on the Pro plan later today. It sparks joy for me. I think you are going to love it... ...

RT Ahmed (@ah20im)The Codex team is just so FAST ✨ ...

We have a special thing launching to Codex users on the Pro plan later today. It sparks joy for me. I think you are going to love it... ...

From how the team operates, I always thought Codex would eventually win. But I am pleasantly surprised to see it happening so quickly.Thank you to all the builders; you inspire us to work even harder.Craig Weiss (@craigzLiszt):nearly all of the best engineers i know are switching from claude to codex ...

We updated GPT-5.2 (the instant model) in ChatGPT today. Not a huge change, but hopefully you find it a little better. ...

RT Isa Fulford (@isafulf)deep research update!! ...

More than 1 million people downloaded Codex App in the first week.60+% growth in overall Codex user last week!We'll keep Codex available to Free/Go users after this promotion; we may have to reduce limits there but we want everyone to be able to try Codex and start building. ...

RT eric zakariasson (@ericzakariasson)try codex 5.3 in cursor! this is currently my fav model ...