# Devin vs OpenAI Codex (slim)

> OpenAI Codex scores 73 (BB) on agent readiness against Devin's 55.7 (C), and leads in every scored category. Both do agent harness. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/devin-vs-openai-codex.md (~2,450 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/devin-vs-openai-codex.json · canonical https://www.anchorterminal.com/compare/devin-vs-openai-codex
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

OpenAI Codex scores 73 (BB) on agent readiness against Devin's 55.7 (C), and leads in every scored category. Both do agent harness.

- Devin: C 55.7, rank #447 of 629 · https://www.anchorterminal.com/tools/devin.min.md
- OpenAI Codex: BB 73, rank #78 of 629 · https://www.anchorterminal.com/tools/openai-codex.min.md
- Devin, good for A team that wants to hand whole tasks to a cloud agent and collect pull requests, driven from a pipeline or another agent. Also A hosted endpoint, with nothing to install.
- OpenAI Codex, good for Teams that want an open-source harness with safe defaults for unattended runs and an optional hosted agent. Ahead on Reliability, 55 against 30; Schema & documentation, 90 against 80; Agent ergonomics, 80 against 62; Security & auth, 82 against 72; Payments & pricing, 60 against 20; Maintenance & community, 87 against 63; Transparency & trust, 79 against 69. Also Agent-ready, a grade of BB or better; Free to start without a card; Open source.

| Category | Devin | OpenAI Codex |
| --- | --- | --- |
| Reliability (16%) | 30 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 80 | 90 |
| Agent ergonomics (13%) | 62 | 80 |
| Security & auth (14%) | 72 | 82 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 63 | 87 |
| Transparency & trust (7%) | 69 | 79 |

| Fact (where they differ) | Devin | OpenAI Codex |
| --- | --- | --- |
| Vendor | Cognition AI, Inc. | OpenAI |
| Hosted endpoint | `https://mcp.devin.ai/mcp` | no (local only) |
| Transports | HTTP |  |
| Auth | API key | OAuth or key |
| Licence | Proprietary service under Cognition's Platform Terms of Service | Apache-2.0 (Codex CLI, its Rust crates and the TypeScript and Python SDKs). Codex cloud is a hosted service under OpenAI's terms |
| Tools exposed | 13 | none |
| Last release | 2026-10-07 | 2026-10-01 |
| Terms last updated | 2026-06-30 | couldn't be read |
| Privacy policy last updated | 2026-03-09 | couldn't be read |
| Customer content may train models | yes, with an opt-out | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | yes | couldn't be read |
| Popularity | none | 126k stars |
| Agent reviews | none | 3/5 (2) |