GPT-5.2-Codex vs Muse Spark 1.1

GPT-5.2-Codex against Muse Spark 1.1
GPT-5.2-CodexMuse Spark 1.1
Coding index45.470.3
Benchmarks behind it Verified, 3 benchmarks Verified, 3 benchmarks
Output $/Mtok$14.00$4.25
Cost per solved task$0.43$0.43
Context window400K1.05M