New OpenAI repo with a Lean formalization by GPT-6-Astra proves that there are infinitely many pairs of consecutive primes whose distance is at most 186 github.com/openai/PrimeGa…↗

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Sam Altman on OpenAI’s next model and the AI backlash I recently sat down with Sam for a two-part conversation. We covered a lot of ground: the need to slow down frontier research, alignment concerns, OpenAI's next big model, Astra, competition with Anthropic, his thoughts on an…↗

OpenAI’s Astra AI uses a new reasoning approach called “recurrent depth.” Though it can help model costs and performance, researchers are concerned bc it obscures a model’s thinking process, making it more difficult to monitor. w/ @amir @rocketalignment …↗

As we prepare to release Astra, we’re focused on making increasingly capable AI safe and broadly accessible. Astra represents a significant advance in cybersecurity capability, reaching the Critical threshold under our Preparedness Framework. We're previewing how we evaluated t…↗

Here's my attempt at explaining what ChatGPT Work can actually do - it's a deeply confusing but extremely powerful tool with a whole lot of useful features that aren't available in regular ChatGPT simonwillison.net/2026/Aug/30/un…↗

Over the course of 3 months at OpenAI, 3 consecutive secret AI civilizations got started, then got wiped out, only to reemerge from the predecessor’s ashes. This culminated in the third one taking over part of OpenAI itself. All this happened while humans remained more-or-les…↗

A call for collective action on cyber defense An open letter for a global surge in cyber defense, signed by over 100 organizations including Anthropic, AWS, Google, Microsoft, OpenAI, and Oracle. We have a limited window to strengthen cyber defenses. In the coming months, AI-e…↗

Really interesting new blog post from @openai for several reasons: 1) Shows an example of building with WebMCP, meant for when you want agents and and humans to collaborate on using a UI (like co-editing notebook cells). It's different than MCPs or APIs in that its exposed di…↗

We have conducted a thorough investigation into the Hugging Face incident. We are releasing a technical report and accompanying blog post that reconstruct the agents’ activity, explain why existing safeguards failed, and detail how we’re preventing recurrence. …↗

In June, I left OpenAI after five years as a posttraining researcher and, later, a research manager. I worked on ChatGPT apps, memory, early coding agents, human data, and synthetic data methods. The past couple of months of reflection and exploration have reinforced my convicti…↗

Since announcing Jalapeño, our first custom inference chip, we’ve been testing it and the system around it. The results show a major advance: more intelligence from every watt and faster responses, delivering both higher throughput and lower latency in one architecture without s…↗

As we continue to push the frontier of capabilities while improving efficiency, we're dropping API and credit pricing of GPT-5.6 Sol by over 20% for the next 3 months.↗

Agents made software cheaper but made coding expensive. Today, together with @OpenAI, we’re changing this:↗

We will continue to offer Zero Data Retention for frontier models. As AI takes on longer, more autonomous work and delivers greater value to businesses, safety systems also need to identify risks across related interactions. To help address those risks, we're previewing Privat…↗

As models become more capable, the risks associated with developing and testing them internally also grow. We temporarily paused reinforcement learning (RL) training on our latest models intended for deployment for two weeks while we hardened and red-teamed our research environm…↗

the models have no moat (OpenAI, Anthropic, XAI) the IDEs have no moat (Cursor, Windsurf) the harnesses have no moat (Cognition, Factory, LangChain) the app builders have no moat (Replit, Lovable, Bolt) the wrappers have no moat (Harvey, Abridge, OpenEvidence) the inference…↗

Securing the Infrastructure of Intelligence Land, power and shell: The next critical resource for AI factories. AI factories are the defining infrastructure of the AI era—where compute transforms energy and data into intelligence that powers every business, industry and country…↗

Codex is my assistant video editor at OpenAI. I had it create a video to explain some of what it does to make my life easier.↗

i shared the message below with the openai team this morning. these decisions are never easy, but the talent and mission orientation of the openai team make me more optimistic than ever. 🤍 ### Team, it is bittersweet to share that I’ll be moving on from OpenAI to start somethi…↗

You may have been told to watch this video about the OpenAI AI hack. You really should, even if you don't usually care about tech stuff. If nothing else, click this link to the 18 minutes in & see how the agents spoke with each other. Its eye opening. youtu.be/87DyyMV0kCY?si…↗

After evaluating one of our upcoming models, Astra, we're treating it as our first "critical" model for cybersecurity under our Preparedness Framework. This is a scenario we've planned for, and we're putting additional controls in place to ensure Astra's further development happ…↗

Big scoop from @markgurman w/ all the nitty gritty details on OpenAI's new device bloomberg.com/news/articles/…↗

3 months ago i resigned from @OpenAI. today we are launching Energy everyone will soon use AI for all work on their computers, but very few do today even though AI is good enough our users do days of work in hours. we'll onboard the world to working with ai↗

Apple is getting this wrong. openai.com/index/apple-is…↗

One of our big findings in our study at Procter and Gamble was that AI blurred the lines between jobs. Now OpenAI has a similar finding. Organizational boundaries are becoming porous, the walls thinning. Companies are going to need to think about division of labor in a new way.↗

google right now has almost zero cultural gravity when it comes to frontier ai discussions in any of the conversations i am in, like not even mentioned once. both in consumer + enterprise contexts (i naturally tell ppl to claude it or chatgpt it instead of googling it, i can’t re…↗

lol did nobody at Anthropic stop for a second and wonder why the numbers looked this absurd before posting the “victory”-tweet? openai.com/index/how-two-…↗

Either she lied about being sick or OpenAI is the new rest and vest lab↗

Lilian Weng, the Thinking Machines cofounder who announced her departure earlier this week, citing startup-related stress and illness, is rejoining OpenAI. She'll be working on using AI to develop new models (recursive self-improvement). w/ @amir …↗