Claude Sonnet 5.5 vs GPT-5.2-Codex
| Claude Sonnet 5.5 | GPT-5.2-Codex | |
|---|---|---|
| Coding index | 87.3 | 45.4 |
| Benchmarks behind it | Verified, 5 benchmarks | Verified, 3 benchmarks |
| Output $/Mtok | $10.00 | $14.00 |
| Cost per solved task | Not computable | $0.43 |
| Context window | 1M | 400K |
| Claude Sonnet 5.5 | GPT-5.2-Codex | |
|---|---|---|
| Coding index | 87.3 | 45.4 |
| Benchmarks behind it | Verified, 5 benchmarks | Verified, 3 benchmarks |
| Output $/Mtok | $10.00 | $14.00 |
| Cost per solved task | Not computable | $0.43 |
| Context window | 1M | 400K |