Claude Sonnet 4.6 vs GPT-5.5

Claude Sonnet 4.6 against GPT-5.5
Claude Sonnet 4.6GPT-5.5
Coding index57.371.3
Benchmarks behind it Verified, 5 benchmarks Verified, 5 benchmarks
Output $/Mtok$15.00$30.00
Cost per solved task$1.68$1.65
Context window1M1.05M