OpenAI Blog · Jan 23, 2026
Unrolling the Codex agent loop
Reviewed by Errol Vogt, Site support technician & online learning analyst · original summary · editorial policy
Unrolling the Codex agent loop. A technical deep dive into the Codex agent loop, explaining how Codex CLI orchestrates models, tools, prompts, and performance using the Responses API. This update is relevant for small-office operators tracking changes in their tools.
Operator takeaway: For operators: review whether 'Unrolling the Codex agent loop' affects your current setup before relying on it in production.
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