GPT-5.4 Nano vs Muse Spark 1.1

GPT-5.4 Nano against Muse Spark 1.1
GPT-5.4 NanoMuse Spark 1.1
Coding index44.870.3
Benchmarks behind it Partial, 2 benchmarks Verified, 3 benchmarks
Output $/Mtok$1.25$4.25
Cost per solved task$0.14$0.43
Context window400K1.05M