Today, we share a breakthrough on the planar unit distance problem, a famous open question first posed by Paul Erdős in 1946.
For nearly 80 years, mathematicians believed the best possible solutions looked roughly like square grids.
An OpenAI model has now disproved that belief, discovering an entirely new family of constructions that performs better.
This marks the first time AI has autonomously solved a prominent open problem central to a field of mathematics.
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We’re adding new ways for people to identify AI-generated images and understand where they came from.
In addition to C2PA Content Credentials, images now also contain a SynthID watermark, and can be identified using a public verification tool to check whether an image was made by OpenAI products.
openai.com/index/advancing-c…
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Now in preview: Codex in the ChatGPT mobile app.
Start new work, review outputs, steer execution, and approve next steps, all from the ChatGPT mobile app. Codex will keep running on your laptop, Mac mini, or devbox.
Rolling out today as a preview on iOS and Android in all supported regions.
Support for connecting your phone to the Codex app on Windows is coming soon.
openai.com/index/work-with-c…
Lucas Web3 retweeted
parameter golf was a blast.
2,000+ submissions. 1,000+ verified github accounts. ideas ranging from quantization and depth recurrence to TTT LoRA, SSMs, H-nets, JEPA, and more.
autoresearch made iteration dramatically faster — and led to emergent bulletin boards, issue threads, unofficial leaderboards, and agent-built writeups that helped everyone learn from everyone else.
it felt like a glimpse of where interaction with AI is headed: humans setting taste and direction, agents helping explore, coordinate, and share what works.
our goal was simple: make ml research accessible to anyone, anywhere.
it was amazing to see that happen.
full recap: openai.com/index/what-parame…
future events: jobs.ashbyhq.com/openai/form…
Introducing Daybreak: frontier AI for cyber defenders.
Daybreak brings together the most capable OpenAI models, Codex, and our security partners to accelerate cyber defense and continuously secure software.
A step toward a future where security teams can move at the speed defense demands.
We also had three third-party AI safety organizations provide feedback on our analysis: @redwood_ai, @apolloresearch, @METR_Evals.
You can find @redwood_ai's report here: blog.redwoodresearch.org/p/o…
Training models involves many technical and social processes, so prevention of CoT grading has to be built into the process.
We’re improving real-time CoT-grading detection, safeguards against accidental CoT grading, monitorability stress tests, and the internal guidance/checks that help catch these issues before deployment.
Lucas Web3 retweeted
We recently found some instances of CoT grading during the training of previously deployed models after building a system that scans all OpenAI RL runs for accidental CoT grading.
We did not find clear evidence that these instances degraded CoT monitorability.
Introducing GPT-Realtime-2 in the API: our most intelligent voice model yet, bringing GPT-5-class reasoning to voice agents.
Voice agents are now real-time collaborators that can listen, reason, and solve complex problems as conversations unfold.
Now available in the API alongside streaming models GPT-Realtime-Translate and GPT-Realtime-Whisper — a new set of audio capabilities for the next generation of voice interfaces.
Our new voice models are now available in the Realtime API:
🎙️ GPT-Realtime-2: Build production-ready voice agents that can think harder, take action, handle interruptions, and keep conversations flowing.
🎙️ GPT-Realtime-Translate: Translate while streaming across more than 70 input and 13 output languages, breaking down language barriers and helping people communicate more naturally.
🎙️ GPT-Realtime-Whisper: Transcribe streaming audio as words are spoken to generate captions and notes in real time.
openai.com/index/advancing-v…
AI supercomputers need a new kind of network to stay in sync at massive scale.
OpenAI’s @markjhandley and @poyntingatgreg join @AndrewMayne to discuss what it takes to move data across record numbers of chips reliably and efficiently, the new Multipath Reliable Connection (MRC) networking protocol, and why it's available for the whole industry to use.
We’ve partnered with @AMD, @Broadcom, @Intel, @Microsoft, and @NVIDIA, to release Multipath Reliable Connection (MRC), a new open networking protocol that helps large AI training clusters run faster and more reliably, with less wasted GPU time.
openai.com/index/mrc-superco…
We’re also improving memory and personalization.
ChatGPT can now better use context from saved memories, past chats, files, and connected Gmail accounts to give more personalized responses.
Memory sources show what relevant context was used to personalize a response and allow you to update, delete, or disconnect as needed.
GPT-5.5 Instant is rolling out over the next two days as the default model to all ChatGPT users, and as ‘gpt-5.5-chat-latest’ in the API.
Personalization improvements are rolling out to Plus and Pro users on the web, and soon on mobile.
Memory sources are rolling out across all ChatGPT consumer plans on the web, and soon on mobile. openai.com/index/gpt-5-5-ins…








