Zuckerberg’s Muse Code Loses to Anthropic on Meta’s Own Benchmark Charts

NewsWed, 05 Aug 2026 22:00:00 UTC2 hours ago
Zuckerberg’s Muse Code Loses to Anthropic on Meta’s Own Benchmark Charts

Mark Zuckerberg launched Muse Code in beta on Wednesday, Meta's first artificial intelligence (AI) coding agent. Anthropic's Claude Opus 5 beats it in all four comparisons Meta published at launch.

Meta released those charts anyway. The company is selling a cheaper tool rather than a better one. Independent test data suggests the gap is wider than Meta showed.

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Meta's Own Charts Hand Anthropic Every Round

Muse Spark 1.2 is the model inside Muse Code. It scored 82.9% on Terminal-Bench 2.1.

Claude Opus 5 scored 86.7% on the same test. Terminal-Bench comes from the Laude Institute and Stanford researchers. It sets 89 real jobs spanning system repair, data work, and security.

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