Claude Opus 4.5 vs GPT-5.1

Claude Opus 4.5 against GPT-5.1
Claude Opus 4.5GPT-5.1
Coding index44.040.4
Benchmarks behind it Verified, 3 benchmarks Verified, 3 benchmarks
Output $/Mtok$25.00$10.00
Cost per solved task$1.37$1.02
Context window200K400K