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OpenAI's flagship AI model GPT-5.5 is here. It's smarter, faster, cheaper, better at long-running tasks and…oh boy, everything just changed again.

This week on AI For Humans, OpenAI dropped state-of-the-art GPT-5.5 and it's not just another model release, it's the start of a much faster iterative rollout. Sam Altman and Chief Scientist Jakub Pachocki both said to expect significantly more releases going forward, admitting the last few years have been surprisingly slow. It may not be Anthropic Mythos numbers but it's actually here.

We walk through the benchmarks, the viral OpenAI dev video about being able to be lazy and letting the model figure things out, and incredible projects people built in the first 24 hours: a full toy railway simulation, Sebastien Bubeck's Unicorn Test, a UFO tank game, and Gavin's Animal Game spun up in 30 minutes.

Plus, Codex got a bunch of new features including browser use and docs. OpenAI shared agents in ChatGPT. More ChatGPT Images 2.0 examples keep dropping. I mean… it's a LOT.