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Codex Auto Review on GPT-5.6 Luna | OpenAI | Chasing Next

OpenAIfeature

July 30, 2026·Source

Codex Auto Review on GPT-5.6 Luna

Codex now runs its automatic code review on GPT-5.6 Luna instead of GPT-5.4, in both the ChatGPT app and the Codex CLI.

Details

Auto review moves from GPT-5.4 to GPT-5.6 Luna in the ChatGPT app and the Codex CLI
OpenAI expects the swap plus Luna's lower price to make auto review roughly 10 times cheaper to run
OpenAI applied the change on its side, there is no setting to flip

Best for

Teams that let Codex review every pull request and were watching what it cost them.

When to use it

Nothing to switch on. It applies the next time auto review runs.

Who benefits

Anyone using Codex auto review in the ChatGPT app or the Codex CLI.

More from OpenAI

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GPT-5.6 Luna and Terra Price Cuts

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