GPT-5.5 vs Mercury 2.5

GPT-5.5 against Mercury 2.5
GPT-5.5Mercury 2.5
Coding index71.31.6
Benchmarks behind it Verified, 5 benchmarks Partial, 2 benchmarks
Output $/Mtok$30.00$0.15
Cost per solved task$1.65Not computable
Context window1.05M260K