Meta's Muse Ember is the cheapest model scoring 36 on the Artificial Analysis Intelligence Index

Meta's Muse Ember scores 36 on the Artificial Analysis Intelligence Index, matching Claude Haiku 5.5 (max) at $0.14 per task versus $0.41 for Claude Haiku 5.5. It stands out on AutomationBench-AA at 68.1% and scores 46 on the Coding Agent Index in Muse Code, ahead of Claude Haiku 5.5 in Claude Code (37) and GPT-6 Luna in Codex (31). Its main weakness is knowledge: AA-Omniscience accuracy of 21.1% versus 34.7% for Claude Haiku 5.5, largely because it declines to answer 64% of questions, which holds its hallucination rate to 17.4%.