Rohan Paul says Meta's Muse Wonder beats Anthropic's Opus 5.5 and OpenAI's GPT-6 Astra on each benchmark he cites. The widest gap is on SWE-Marathon, where Muse Wonder scores 57.5 against 46.3 for Opus 5.5, a test in which agents must build a full software project over 2 to 10 hours with every hidden check passing.
Meta is so back. in each of these benchmarks Muse Wonder beats both Opus 5.5 and GPT-6 Astra
The widest gap comes on SWE-Marathon. this one tests whether an AI agent can build an entire software project on its own, such as a C compiler or a Slack clone, over 2 to 10 hours, and counts a task only if every hidden check passes.
And muse wonder full scores 57.5 against 46.3 for Opus 5.5.
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Source: Rohan Paul · x.comPublished · added here
