GPT-5.1 vs Hy4

GPT-5.1 against Hy4
GPT-5.1Hy4
Coding index40.465.2
Benchmarks behind it Verified, 3 benchmarks Partial, 2 benchmarks
Output $/Mtok$10.00$1.2505
Cost per solved task$1.02Not computable
Context window400K1.05M