GPT-5.1-Codex vs Muse Ember

GPT-5.1-Codex against Muse Ember
GPT-5.1-CodexMuse Ember
Coding index15.364.9
Benchmarks behind it Partial, 2 benchmarks Verified, 3 benchmarks
Output $/Mtok$10.00$0.50
Cost per solved task$0.892Not computable
Context window400K1.05M