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Meta's Muse Wonder Full Scores 56 on Artificial Analysis Index, Placing Second Behind Claude Opus 5.5

October 12, 2026 at 21:52 EDT

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Meta released Muse Wonder and Muse Wonder Full on October 12, 2026, marking the company's entry into frontier-class AI competition. On the Artificial Analysis Intelligence Index v4.3, Muse Wonder Full achieved a score of 56, placing it second overall and tied with Claude Sonnet 5.5, while Claude Opus 5.5 ranked first with 58.

Breaking News • October 12, 2026

Meta Enters Frontier AI Race

Muse Wonder Full scores 56 on Artificial Analysis Intelligence Index, placing second only to Claude Opus 5.5 in the competitive benchmark rankings.

Intelligence Index Rankings

Claude Opus 5.5

Muse Wonder Full

Artificial Analysis Intelligence Index v4.3 (max reasoning)

Strong Performance

SWE-Marathon: 57.5 vs Opus 5.5's 46.3
Legal work: 13.1 vs Opus 5.5's 4.2
Low hallucination rates

Limitations

Wonder Full unavailable via API
Limited to Muse Code subscribers
Weak on knowledge tasks

Pricing: USD 4 per million input tokens, USD 20 per million output tokens. Matches Claude Opus 5.5; undercuts GPT-6 Astra.

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