C
Autonomous coding agentsFor developersOpen source#6 trending agent
Codex
OpenAI’s coding agent for the CLI, IDE and cloud (included in ChatGPT plans).
- Price
- See official site
- GitHub stars
- ★ 131k
- Latest release
- rust-v0.164.0
- 3 days ago
- Weekly usage (OpenRouter)
- 2.1T tokens
Plans & pricing
Codex's pricing page loads prices with JavaScript, so we don't copy them — we'd rather link than guess. See current plans ↗
What it is and who it's for
Agents that read your whole project, plan, edit many files, run tests and fix failures on their own — usually from the terminal. You review what they did, like a teammate’s pull request.
Best for: Developers shipping features, refactors and bug fixes faster.
Top models for backend development
By Coding Index · Artificial Analysis
The best-scoring models for the kind of work Codex does. Check Codex's docs for which models it supports.