Head-to-head
Devin vs OpenAI Codex
Devin leads: the AI models rank it above its rival on 1 of the 1 leaderboard they share. Based on how ChatGPT, Claude, Gemini & Grok rank both across the leaderboard they share — re-polled weekly, reasoning shown verbatim.
| Leaderboard | Devin | OpenAI Codex |
|---|---|---|
| Best background coding agent | #2 / 10 | #3 / 10 |
Why the models rank Devin — on best background coding agent
“Leading raw agentic autonomy with a fully sandboxed browser, terminal, and editor. Can ingest a ticket, research the code, write/run tests, and debug in an isolated environment to deliver ready-to-merge PRs. (NEAR-TIE WITH FACTORY.AI: Devin wins on raw multi-tool capability and developer independence, whereas Factory.ai is vastly superior for enterprise guardrails).”
Why the models rank OpenAI Codex — on best background coding agent
“Best overall for a typical GitHub team: consistently strong real-world PR acceptance, capable long-running cloud sandboxes, parallel delegation, direct issue assignment, test execution, and review-driven iteration. Assumes tickets are well scoped and repositories have reproducible setup.”
More head-to-heads
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Ranks from the merged 4-model leaderboards · re-polled weekly · methodology