GPT-5.1-Codex vs GPT-6 Luna
| GPT-5.1-Codex | GPT-6 Luna | |
|---|---|---|
| Coding index | 15.3 | 57.3 |
| Benchmarks behind it | Partial, 2 benchmarks | Verified, 5 benchmarks |
| Output $/Mtok | $10.00 | $0.50 |
| Cost per solved task | $0.892 | Not computable |
| Context window | 400K | 1.05M |
| GPT-5.1-Codex | GPT-6 Luna | |
|---|---|---|
| Coding index | 15.3 | 57.3 |
| Benchmarks behind it | Partial, 2 benchmarks | Verified, 5 benchmarks |
| Output $/Mtok | $10.00 | $0.50 |
| Cost per solved task | $0.892 | Not computable |
| Context window | 400K | 1.05M |