SMRTR ProgrammingJan 26, 2026Daily.dev

OpenAI spills technical details about how its AI coding agent works

SMRTR summary

OpenAI engineer Andrew Bolin revealed details about the agent loop powering OpenAI's Codex CLI, the repeating cycle that orchestrates interactions between users, AI models, and coding tools. The loop starts with constructing prompts from system instructions, available tools, and user input, then iterates through model responses and tool executions until completion.

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