Devin vs OpenAI Codex
Which one should you choose? We've broken down the key differences between Devin and OpenAI Codex to help you make an informed decision for your operational workflow.
Devin
Cognition AI's autonomous AI software engineer that independently plans, codes, debugs, and deploys full software projects from a single prompt. Operates in its own sandboxed environment with a browser, terminal, and code editor — the first AI to achieve meaningful scores on the SWE-bench real-world coding benchmark.
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OpenAI Codex
OpenAI's cloud-based autonomous coding agent (launched May 2025) integrated into ChatGPT. Runs parallel tasks in isolated cloud sandboxes with access to GitHub repos — reads code, executes tests, opens PRs, and fixes bugs with minimal supervision. Powered by the o3 model and available to Pro/Plus/Team subscribers.
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| Feature | Devin | OpenAI Codex |
|---|---|---|
| Monthly Price | $500/mo | $20/mo |
| Verdict | MAYBE | MAYBE |
| Trust Score | 57% | 57% |