For developers building software with OpenAI's models, Codex is a coding agent that plans, writes, tests, and ships code changes from a natural-language prompt — in the CLI, IDE, or cloud.
▲ 19 60-day move
Measures earned, engagement-weighted share of voice across the GTM voices panel. Methodology →
Ranked #3 of 25 in Coding Agents & Harnesses for GTM, up 19 this cycle.
Measures how easily your agents can build on it — API, MCP, CLI, SDK, docs depth. Methodology →
Grade A — ships API, MCP, SDK, and CLI; agents can build on it today.
Scaled-stage on our scale — 9,204 employees on record.
Parent OpenAIFounded 2015Funding $183BStatus Independent
Employees & founded inherited from OpenAI (parent).
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