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. https://t.co/0MyFKCe2Mu
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.
three of the things we are most excited about:
1. AGI accelerating research
2. AGI accelerating companies
3. personal AGI accelerating everyone in achieving their goals
today it was great to announce the unit distance result.
yesterday it was great to announce that we are offering to invest $2M in openai credits into every YC company.
now we need to increase our efforts on the third!
You've been asking for this one...
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.
It's never been easier to do everyday work with Codex.
Choose your role, connect the apps you use every day, and try suggested prompts.
Codex helps with everything from research and planning to docs, slides, spreadsheets, and more.
Introducing GPT-5.5
A new class of intelligence for real work and powering agents, built to understand complex goals, use tools, check its work, and carry more tasks through to completion. It marks a new way of getting computer work done.
Now available in ChatGPT and Codex.
Exciting news - GPT-Image-2 by @OpenAI has claimed the #1 spot across all Image Arena leaderboards!
A clean sweep with a record-breaking +242 point lead in Text-to-Image - the largest gap we’ve seen to date.
- #1 Text-to-Image (1512), +242 over #2 (Nano-banana-2 with web-search aka gemini-3.1-flash-image)
- #1 Single-Image Edit (1513), +125 over #2 (Nano-banana-pro aka gemini-3-pro-image)
- #1 Multi-Image Edit (1464), +90 over #2 (Nano-banana-2)
No model has dominated Image Arena with margins this wide.
Huge congratulations to @OpenAI on this major breakthrough in image generation! More performance breakdowns by category in the thread below.
Introducing ChatGPT Images 2.0
A state-of-the-art image model that can take on complex visual tasks and produce precise, immediately usable visuals, with sharper editing, richer layouts, and thinking-level intelligence.
Video made with ChatGPT Images
Codex for (almost) everything.
It can now use apps on your Mac, connect to more of your tools, create images, learn from previous actions, remember how you like to work, and take on ongoing and repeatable tasks.
Honestly this chart makes me more bullish on GPT 5.4 Pro than anything else.
People are focusing on Mythos looking strong, but what stands out to me is how well 5.4 Pro already stacks up on the overlap we actually have. GPQA is basically a tie at 94.4 vs 94.5. BrowseComp is a win for GPT 5.4 Pro at 89.3 vs 86.9. Yes, Mythos is ahead on Humanity’s Last Exam, 56.8 vs 42.7 without tools and 64.7 vs 58.7 with tools, but the bigger point is that 5.4 Pro is already this competitive right now.
So if GPT 5.4 Pro is already THIS COMPETITIVE here, then Spud Pro, the next OpenAI flagship, is guaranteed to beat Mythos. This chart makes OpenAI look extremely close before its next real jump, and once that next jump lands I do not think Mythos stays ahead.
We're rolling out plugins in Codex.
Codex now works seamlessly out of the box with the most important tools builders already use, like @SlackHQ, @Figma, @NotionHQ, @gmail, and more.
https://t.co/PQDsLqHGA6