GPT-5.3-Codex vs GPT-6 Luna
| GPT-5.3-Codex | GPT-6 Luna | |
|---|---|---|
| Coding index | 60.0 | 57.3 |
| Benchmarks behind it | Verified, 3 benchmarks | Verified, 5 benchmarks |
| Output $/Mtok | $14.00 | $0.50 |
| Cost per solved task | $0.59 | Not computable |
| Context window | 400K | 1.05M |
| GPT-5.3-Codex | GPT-6 Luna | |
|---|---|---|
| Coding index | 60.0 | 57.3 |
| Benchmarks behind it | Verified, 3 benchmarks | Verified, 5 benchmarks |
| Output $/Mtok | $14.00 | $0.50 |
| Cost per solved task | $0.59 | Not computable |
| Context window | 400K | 1.05M |