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Introducing the Codex app for macOS—a command center for AI coding and software development with multiple agents, parallel workflows, and long-running tasks.
The Codex app changes how software gets built and who can build it—from pairing with a single coding agent on targeted edits to supervising coordinated teams of agents across the full lifecycle of designing, building, shipping, and maintaining software.
Codex by OpenAIA command center for working with agents
Apache 2.0 licensed open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases.
OpenAI Open Modelsgpt-oss-120b and gpt-oss-20b open-weight language models