Partially Verified65% confidenceBenchmarkExact time
Meta's chart shows Muse Wonder beating Claude Opus 5.5 on long-horizon coding tasks: DeepSWE score 78.8 versus 74.2, SWE-Marathon score 53.1 versus 46.3.
3
Sources
65%
Confidence
Short-term (~14 days)
Relevance
10/12/2026
First Seen
Valid until: 10/26/2026
Sources
Related Entities
Related Claims
UnverifiedOn DeepSWE 1.1, Muse Wonder beats Claude Opus 5.5 78.8 to 74.2, leads 10.0 to 4.2 on the Harvey legal agent benchmark LAB-AA, and leads 53.1 to 46.3 on SWE-Marathon.80% similarUnverifiedIn the DeepSWE 1.1 benchmark, Muse Wonder Full achieved 79.0%, exceeding Claude Opus 5.5's 74.2% and GPT-6 Astra's 74.1%.75% similarUnverifiedAmong the 14 benchmarks listed on Meta's model card, Muse Wonder (the API version) achieved 5 wins and 9 losses against Claude Opus 5.5.73% similarUnverifiedMeta claims MuseWonder Full scores 56 on the Artificial Analysis Intelligence Index, only two points behind Claude Opus 5.5, and scores 79 on the DeepSway software engineering benchmark.72% similarUnverifiedOn SWE-Marathon, Muse Wonder scored 53.1 and Claude Opus 5.5 scored 46.3, sourced from Abundant AI; however, a footnote states that the comparison used different agent harnesses and is not a controlled common comparison.71% similar
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