GPT-5.6 Luna vs Muse Spark 1.2

GPT-5.6 Luna against Muse Spark 1.2
GPT-5.6 LunaMuse Spark 1.2
Coding index58.055.7
Benchmarks behind it Verified, 6 benchmarks Verified, 5 benchmarks
Output $/Mtok$1.20$4.25
Cost per solved task$0.04$0.64
Context window1.05M1.05M