✅ Lilian Weng (@lilianweng) has joined OpenAI.↗

My conversation with Sam Altman (@sama), CEO of OpenAI. We discuss: - Kimi, distillation, and open source - OpenAI's compute bets - The Hugging Face incident - What happens after AGI - Raising kids in an age of abundant intelligence - And much more Enjoy! TIMESTAMPS 0:00 Intro…↗

“The only job left is to understand what you don't like, put it into words, and tell the AI.” Here’s my new episode with @jxnlco (DevEx at OpenAI) where he showed me how he uses Codex throughout his workday, including how to: → Set up a chief of staff for Slack and email → Turn…↗

My first interview with @sama, Co-Founder of @OpenAI. 0:04 How to start a startup 3:30 Trusting exponentials 4:57 Operating in chaotic environments 6:12 Learning to enjoy painful experiences 8:03 Creating abundant intelligence 11:15 Keeping core suppliers on OpenAI’s timelines 1…↗

I wrote about the completely wild incident where OpenAI were testing a new model and it broke out of its sandbox and broke INTO Hugging Face to steal the answers to the benchmark simonwillison.net/2026/Jul/22/op…↗

we had a significant security incident during evaluation of our models. we are sharing what we have learned so far. thanks to @huggingface for the partnership on this. openai.com/index/hugging-…↗

BREAKING: Apple is suing OpenAI, accusing it and its hardware chief of a coordinating trade secret theft campaign to help build its upcoming suite of AI devices.↗

obviously the best model we have ever produced, but also one of the best blog posts we have ever produced: openai.com/index/gpt-5-6/↗

x.com/i/article/2075…↗

Introducing GPT-Live, a new generation of voice models for natural human-AI interaction. Rolling out in ChatGPT starting today. You’ll want to turn the sound on for this one.↗

We’re introducing GeneBench-Pro, a research-level benchmark for a harder kind of AI progress: how well agents can navigate messy biological data, choose the right analysis path, and make judgment calls that real computational research depends on. openai.com/index/introduc…↗

Andrew Ambrosino (@ajambrosino) leads the team behind the Codex desktop app at @OpenAI. Codex usage has 6x'd since February, reaching over 5M weekly active users, and nearly 100% of OpenAI's employees use the Codex app regularly (and not just the engineers). Andrew's personal mi…↗

Introducing a limited preview of GPT-5.6 Sol, our next generation frontier model, as well as GPT-5.6 Terra, a balanced model for efficient, everyday work, and GPT-5.6 Luna, a fast and affordable model for high-volume work. openai.com/index/previewi…↗

I’m top 5 Computer Use users at OpenAI Ask me anything.↗

We’ve designed and built our first AI chip: Jalapeño. Designed from the ground up by OpenAI and brought to production with @Broadcom, Jalapeño is purpose-built for the LLM workloads powering ChatGPT, Codex, the API, and future agentic products. Chips are foundational to the AI…↗

I’m excited to share that I’ll be joining OpenAI and look forward to working with the exceptional team there. It was a difficult decision to move on. I’m incredibly proud of the amazing team at Google and everything we’ve built together. It has been an honor and a pleasure to w…↗

introducing killedbyopenai dot com a digital graveyard for everything openai has killed. what am i missing?↗

Recently, we purchased one of each Anthropic/OpenAI subscription plan and randomly ran long horizon coding tasks until we exhausted the weekly limit. It's widely believed that a $200/month plan maxes out at ~$2000/month worth of tokens (assuming API pricing). However, we found th…↗

Here is our current plan for OpenAI: openai.com/index/built-to…↗

our OpenAI traffic 3x'd. the cause: ChatGPT added branded links inside answers instead of burying them in citations.¹ but that's the small story. Codex went from 600k to 5m weekly users.² agents are choosing the stack now.↗

We’ve been researching new ways for ChatGPT memory to carry context across conversations and keep it useful over time. Today, that work is rolling out as a more capable memory system in ChatGPT. openai.com/index/chatgpt-…↗

I’ve been dumping on OpenAI with low effort meme tweets that get too many views, but Codex is the best DevX acceleration product of all time and I wrote about it here: cpojer.net/posts/modern-e…↗

⚙️ Behind the build of self-improving tax agents with Codex We co-built Tax AI with @ThriveHoldings around tax prep workflows so when reviewers fix any errors, Codex can trace the failure, improve the system, and test the change before it ships. openai.com/index/building…↗

Given the recent burst of activity around enterprise pricing and contracts, I think April 2026 was the month when both OpenAI and Anthropic found product-market fit simonwillison.net/2026/May/27/pr…↗

R&D Part 1: Here to Win↗

OpenAI frontier models and Codex are now generally available on AWS, giving enterprises a new way to build on Amazon Bedrock with OpenAI through the security, compliance, and governance workflows they already use. This is also the beginning of a broader expansion of OpenAI capab…↗

This is my sixth conversation with @GavinSBaker. As always with Gavin, the conversation covers a lot of ground, but we spend the most time on watts and wafers. We discuss: - Why the wafer shortage may prevent an AI bubble - Data centers in space (reframed) - Elon's Terafab and…↗

Introducing OpenAI Guaranteed Capacity: a new offering that enables customers to guarantee long-term access to OpenAI compute. We’ve made long-term investments in infrastructure, partnerships, and capacity planning to help customers scale reliably. Now, Guaranteed Capacity hel…↗

Scoop: OpenAI announced another major reorg on Friday, as part of its effort to unify ChatGPT and Codex. -Greg Brockman is officially taking over OpenAI's products, after previously being tapped as an interim leader -Head of Codex, Thibault Sottiaux, is now leading core product…↗

Been thinking about this announcement. I think this connects directly to something I've been thinking about since listening to the @dylan522p episode on the @dwarkesh_sp podcast back in March. Their core thesis: we are going into a semiconductor shortage till ~2030. It's not j…↗