Claude Opus 5.5 vs GPT-5.6 Luna
| Claude Opus 5.5 | GPT-5.6 Luna | |
|---|---|---|
| Coding index | 88.8 | 58.0 |
| Benchmarks behind it | Verified, 5 benchmarks | Verified, 6 benchmarks |
| Output $/Mtok | $20.00 | $1.20 |
| Cost per solved task | Not computable | $0.04 |
| Context window | 1M | 1.05M |
| Claude Opus 5.5 | GPT-5.6 Luna | |
|---|---|---|
| Coding index | 88.8 | 58.0 |
| Benchmarks behind it | Verified, 5 benchmarks | Verified, 6 benchmarks |
| Output $/Mtok | $20.00 | $1.20 |
| Cost per solved task | Not computable | $0.04 |
| Context window | 1M | 1.05M |