#gpt-53-codex

#gpt-53-codex

OpenAI may have violated California's new AI safety law with the release of its latest coding model, according to allegations from an AI watchdog group.A violation would potentially expose the company to millions of dollars in fines, and the case may become a precedent-setting first test of the new law's provisions.

Today, OpenAI announced GPT-5.3-Codex, a new version of its frontier coding model that will be available via the command line, IDE extension, web interface, and the new macOS desktop app. (No API access yet, but it's coming.) GPT-5.3-Codex outperforms GPT-5.2-Codex and GPT-5.2 in SWE-Bench Pro, Terminal-Bench 2.0, and other benchmarks, according to the company's testing. There are already a few headlines out there saying "Codex built itself," but let's reality-check that, as that's an overstatement.