OpenAI Codex
OpenAI · ai-coding-agents
Agent-first coding tool for autonomous multi-step tasks across real repositories.
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Re-emerged in 2025 as a serious autonomous coding agent, Codex is praised for its follow-through on multi-step tasks — understanding repo structure, coordinating changes, running tests, and iterating without drifting.
Capabilities
autonomous-codingmulti-steprepo-understandingtesting