Comparison · Coding
Devin vs OpenAI Codex: which AI agent is better?
A side-by-side look at Devin and OpenAI Codex on quality, price, capabilities and trust. Scores measure observable public data; prices come from each vendor's own pricing page. Every fact is sourced and dated.
| Devin Cognition | OpenAI Codex OpenAI | |
|---|---|---|
| Agent Score | 48 | 49 |
| Entry price | $20/mo · free plan | $8/mo · free plan |
| Trust | ✓ VERIFIED | ✓ VERIFIED |
| Capabilities documented | 4 | 3 |
| Free plan | ✓ Yes | ✓ Yes |
| Free trial | — | — |
| Public API | — | ✓ Yes |
| MCP support | — | — |
| Open source | No | ✓ Yes |
| Last verified | 13 Oct 2026 | 13 Oct 2026 |
Score breakdown
| Component | Devin | OpenAI Codex |
|---|---|---|
| Capabilities | 50 | 38 |
| Integrations | Not measured | 25 |
| Documentation | Not measured | Not measured |
| Pricing clarity | 100 | 100 |
| Transparency | 100 | 100 |
| Freshness | 100 | 100 |
| Human oversight | Not measured | Not measured |
Choose Devin if…
- You want more documented capabilities (4 vs 3).
Choose OpenAI Codex if…
- You want a higher Agent Score (49 vs 48).
- You want an open-source option.
- You want a public API.
See the full picture: Devin · OpenAI Codex · more Coding agents · all comparisons.