Claude Opus 5.5 vs GPT-5.4

Claude Opus 5.5 against GPT-5.4
Claude Opus 5.5GPT-5.4
Coding index88.864.4
Benchmarks behind it Verified, 5 benchmarks Verified, 3 benchmarks
Output $/Mtok$20.00$15.00
Cost per solved taskNot computable$1.02
Context window1M1.05M