From the source
Meta released Muse Wonder and Muse Wonder Full, which it says are among the most capable AI models globally.
The largest version outperforms Anthropic's Claude Fable 5.1 and ranks just below Claude Opus 5.5 on the Artificial Analysis Intelligence Index, and it outperforms
OpenAI's GPT-6 Astra and both Claude models on some specialized benchmarks.
The models include Active Memory and Active Focus features designed to improve agent reliability and safety.