OpenAI
Codex
OpenAI's coding agent for a repository
Pending testUsage-based
Score
- Quality
- Pending
- Price
- Pending
- Speed
- Pending
- Ease of starting
- Pending
Last tested: not yet. Pending is not a zero.
Waiting on the vibe-coding bench: a small multi-page web app from a written spec. No score until that test is published.
Plain-language take
Written from public product information. This is not a test result.
OpenAI's agent for working through tasks in a repo from the Codex CLI and ChatGPT.
Pricing
Usage-based · checked 16 October 2026
Codex access is tied to OpenAI plans and API usage. This listing does not copy a dollar amount. See openai.com/codex.
Pricing sourceUse cases
Alternatives
- Claude Code — Anthropic's coding agent for the terminal and editor
- GitHub Copilot — GitHub's coding assistant across the editor, CLI, and cloud
- Aider — Open-source pair programmer in the terminal