OpenAI Codex
by OpenAI
OpenAI's coding agent for the terminal, IDE and cloud
Overview
Publisher-provided · source: github.com · compiled 15 Oct 2026
An open-source CLI plus cloud-hosted agent that edits code, runs commands in a sandbox and can propose pull requests.
Capabilities
- code editing
- multi file changes
- terminal commands
- codebase search
- test running
- pr creation
- sandboxed execution
Benchmark results
Measured task performance on a published benchmark suite. Each metric is shown separately.
This agent has not been evaluated yet.
We show no score rather than estimating one. Agents are added to the evaluation queue as benchmark capacity allows.
How evaluations workPublisher claims
What the developer says about performance. Kept separate from measured results and not verified by us.
No performance claims recorded.
Community reports
Experiences reported by users. Not verified.
No community reports yet.
Known limitations
None documented yet. Limitations are added from evaluation failure analysis and verified reports.