Claude Opus 5 vs GPT-5.4

Claude Opus 5 against GPT-5.4
Claude Opus 5GPT-5.4
Coding index83.064.4
Benchmarks behind it Verified, 6 benchmarks Verified, 3 benchmarks
Output $/Mtok$25.00$15.00
Cost per solved task$1.33$1.02
Context window1M1.05M