Head to head · Coding · updated Oct 18, 2026
OpenAI Codex vs Claude Code
OpenAI Codex scores 92 to Claude Code's 88 on public evidence for autonomous coding agent, and they rank #1 and #3 there. Only OpenAI Codex has a free tier. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
OpenAI Codex
OpenAI's coding agent, available as an open-source CLI, an IDE extension, and a cloud sandbox in ChatGPT.
+ Cloud mode runs many tasks in parallel sandboxes and opens PRs for each.
− Native Windows support in the CLI arrived late and sandboxing can block legitimate commands.
Claude Code
Terminal-based agentic coding tool that reads, edits, tests, and commits in your repo.
+ Handles long multi-step tasks across a whole repo with strong tool use and MCP support.
− Token spend on the API plan can be high and Pro-plan rate limits reset only every five hours.
Side by side
public evidence| OpenAI Codex | Claude Code | |
|---|---|---|
| Evidence score / 100 | 92 | 88 |
| GitHub stars | 129,728 | 152,222 |
| Hacker News stories, 30d | 11 | 357 |
| Release-feed mentions, 30d | 0 | 96 |
| Last activity | 0 days ago | 0 days ago |
| Pricing | Free tier · Included with ChatGPT Plus $20/mo and Pro; CLI free with API key | Paid · Included with Claude Pro $20/mo and Max; or API usage |
| Platforms | cli, web, vscode-extension, mac, linux | cli, vscode-extension, jetbrains-plugin, mac, windows, linux, web |
| Maker | OpenAI | Anthropic |
Which one?
Pick OpenAI Codex if
- you want the stronger public evidence (92 vs 88)
- you want open source — self-host it, read it, fork it
Best for ChatGPT subscribers who want background coding tasks.
Pick Claude Code if
- you need it on jetbrains-plugin, windows
Best for developers comfortable delegating whole tasks from the terminal.