GPT-5.4 Mini vs Muse Spark 1.3

GPT-5.4 Mini against Muse Spark 1.3
GPT-5.4 MiniMuse Spark 1.3
Coding index35.857.4
Benchmarks behind it Verified, 5 benchmarks Verified, 4 benchmarks
Output $/Mtok$4.50$4.25
Cost per solved task$0.70Not computable
Context window400K1.05M