GPT-5.5 vs Muse Spark 1.2

GPT-5.5 against Muse Spark 1.2
GPT-5.5Muse Spark 1.2
Coding index67.865.1
Benchmarks behind it Partial, 2 benchmarks Partial, 2 benchmarks
Output $/Mtok$30.00$4.25
Cost per solved task$1.65$0.64
Context window1.05M1.05M