OpenAI Codex

OpenAI's open-source agentic coding CLI.

Visit site GitHub
Open source MCP support usage
LicenseApache-2.0
Starting pricePay per token (OpenAI API)
Model supportgpt
Languagesmulti
GitHub stars93.6k
Last activity2026-06-25
VerifiedThu Jun 25 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Verified byseed

OpenAI's terminal coding agent that runs locally and drives the OpenAI models to plan and apply changes.

Strengths

  • Open-source CLI
  • Sandboxed command execution

Tradeoffs

  • OpenAI models only
  • Newer, less battle-tested than incumbents