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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.
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.
So it's time for an update! For March 2026... which agentic code product do you currently prefer, Codex (w/ GPT-5.4 xhigh) or Claude Code (w/ Claude Opus 4.6)?
o3-mini is here! Together with @shengjia_zhao, @_kevinlu, @max_a_schwarzer, @ericmitchellai, @brian_zq, @sandersted and many others, we trained this efficient reasoning model, maximally compressing the intelligence from big brothers o1 / o3. The model is very good in hard math/coding/science questions with a fraction of cost and latency, defining new cost-efficient reasoning frontier.
The model supports three different reasoning powers. Users can adjust the thinking time based on different use cases. The longer the model thinks, the better its capability is.
With o3-mini-low, we drastically reduce latency compared to o1-mini, achieving GPT-4o level latency for response.
You can apply early access to this model today to do safety-testing!
https://t.co/PdWsBPEipr
sora is launching today to all chatgpt pro and plus users!
it's been a big effort to make this possible + i think the product is really fun & intuitive.
my fav thing to do is generate fake historical found footage. video inpainting is also really strong.
have fun!
so excited for Sora to launch today! seeing words in a textbox (a corgi with sunglasses surfing with the golden gate bridge in the background) come to life within seconds is nothing short of magic 🪄✨
🎄🎅starting tomorrow at 10 am pacific, we are doing 12 days of openai.
each weekday, we will have a livestream with a launch or demo, some big ones and some stocking stuffers.
we’ve got some great stuff to share, hope you enjoy! merry christmas.
completed 2 years today at OpenAI! grateful for the incredible people I get to work with and the chance to be part of 🤯research that can truly make a difference. excited for what's ahead on this journey 🚀