GPT-5.2-Codex vs Muse Ember

GPT-5.2-Codex against Muse Ember
GPT-5.2-CodexMuse Ember
Coding index45.464.9
Benchmarks behind it Verified, 3 benchmarks Verified, 3 benchmarks
Output $/Mtok$14.00$0.50
Cost per solved task$0.43Not computable
Context window400K1.05M