OpenAI Upgrades Codex CLI Auto Review to GPT-5.6 Luna, Cutting Costs by 10x

OpenAIDevs · x · 2026-07-31

OpenAI has upgraded the auto review feature in the ChatGPT app and Codex CLI from GPT-5.4 to GPT-5.6 Luna.

Combined with Luna's new pricing, this model switch is expected to make the auto review process about 10 times cheaper.

Related event: OpenAI Upgrades Auto-Review to GPT-5.6 Luna(3 posts)→

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