GPT-5.1-Codex vs GPT-5.5
| GPT-5.1-Codex | GPT-5.5 | |
|---|---|---|
| Coding index | 15.3 | 71.3 |
| Benchmarks behind it | Partial, 2 benchmarks | Verified, 5 benchmarks |
| Output $/Mtok | $10.00 | $30.00 |
| Cost per solved task | $0.892 | $1.65 |
| Context window | 400K | 1.05M |
| GPT-5.1-Codex | GPT-5.5 | |
|---|---|---|
| Coding index | 15.3 | 71.3 |
| Benchmarks behind it | Partial, 2 benchmarks | Verified, 5 benchmarks |
| Output $/Mtok | $10.00 | $30.00 |
| Cost per solved task | $0.892 | $1.65 |
| Context window | 400K | 1.05M |