GPT-5.1-Codex vs o4 Mini
| GPT-5.1-Codex | o4 Mini | |
|---|---|---|
| Coding index | 50.5 | 68.6 |
| Benchmarks behind it | Partial, 2 benchmarks | Partial, 2 benchmarks |
| Output $/Mtok | $10.00 | $4.40 |
| Cost per solved task | $0.892 | Not computable |
| Context window | 400K | 200K |
| GPT-5.1-Codex | o4 Mini | |
|---|---|---|
| Coding index | 50.5 | 68.6 |
| Benchmarks behind it | Partial, 2 benchmarks | Partial, 2 benchmarks |
| Output $/Mtok | $10.00 | $4.40 |
| Cost per solved task | $0.892 | Not computable |
| Context window | 400K | 200K |