Codex, the recently launched AI coding assistant from OpenAI, has received a big update. The company has added a bunch of new features to make Codex feel more like a true coding collaborator, extending its reach across IDEs, GitHub, and the command line, all powered by GPT-5.
We’re releasing new Codex features to make it a more effective coding collaborator:
— OpenAI Developers (@OpenAIDevs) August 27, 2025
– A new IDE extension
– Easily move tasks between the cloud and your local environment
– Code reviews in GitHub
– Revamped Codex CLI
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