Meta launches Muse Wonder Full, its first frontier-class model, topping rivals on agentic benchmarks

Meta Superintelligence Labs unveiled Muse Wonder and Muse Wonder Full on October 12, 2026, marking the company's return to frontier-class AI model development after years of lower-profile releases. The larger Wonder Full variant scores highest on Meta's internal Personal Superintelligence Index—a composite benchmark weighted toward multi-step real-world work—and outperforms Claude Opus 5.5, GPT-6 Astra, and Claude Fable 5.1 on specialized agent-focused benchmarks, particularly on legal and workflow automation tasks.