Claude Sonnet 4.5 vs GPT-5.4

Claude Sonnet 4.5 against GPT-5.4
Claude Sonnet 4.5GPT-5.4
Coding index39.564.4
Benchmarks behind it Verified, 3 benchmarks Verified, 3 benchmarks
Output $/Mtok$15.00$15.00
Cost per solved task$1.16$1.02
Context window1M1.05M