Claude Opus 4.8 vs GPT-5.5

Claude Opus 4.8 against GPT-5.5
Claude Opus 4.8GPT-5.5
Coding index65.071.3
Benchmarks behind it Verified, 6 benchmarks Verified, 5 benchmarks
Output $/Mtok$25.00$30.00
Cost per solved task$2.17$1.65
Context window1M1.05M