Launch and access

Meta Superintelligence Labs released Muse Wonder and Muse Wonder Full on Monday, 12 October 2026, which the company describes as its most capable AI models to date. Meta says these are the first models it considers comparable in performance to those from Anthropic and OpenAI, with a focus on professional and personal tasks. Muse Wonder is available through the Meta Model API and Muse Code, and it will serve as the basis for the Muse personal AI agent. Muse Wonder Full is available only to Muse Code subscribers and is not offered through the API. Meta says the models were trained at its Prometheus gigawatt-scale data center and that it began overhauling its AI business 14 months ago.

Capabilities and benchmarks

Meta highlights two core features of Muse Wonder. Active Memory lets the model remember and maintain context across multiple conversations, while Active Focus works autonomously on long, complex tasks and can generate artifacts such as web applications. According to La Vanguardia, the models accept text, images, audio and video with a context window of one million items. Active Focus keeps working toward a goal when it hits obstacles, tries alternatives, and asks for confirmation before very important decisions. Meta reports strong results on the SWE-Marathon and DeepSWE 1.1 software engineering tests, the Harvey LAB-AA legal test and the Vals Finance Agent V2 finance test. Meta's own tests also show Claude Opus 5.5 still ahead on the Artificial Analysis index and on the Terminal-Bench and ProgramBench coding tests, while GPT-6 Astra leads on professional work and ranks above Muse Wonder on terminal programming (Terminal-Bench 4.0). Courrier international reports that Artificial Analysis, an independent organization, tested Muse Wonder Full and found that only Claude Opus 5.5 Max performed better.

Pricing and market reaction

Through the API, Muse Wonder costs $4 per million input tokens and $20 per million output tokens, which Naftemporiki says makes it roughly equivalent in cost to GPT-6 Sol and Opus 5.5. CNBC, cited by Courrier international, puts subscriptions for Muse Wonder users at $20 or $100 per month. Reuters reports that Meta shares rose about 4% in afternoon trading on Monday. The Financial Times, as cited by Courrier international, says the stock has risen 10% since early September. The same outlet reports that the Muse app remains at the top of download charts on Apple and Android app stores. Courrier international also quotes the FT as calling the Muse Wonder test on whether it improves the user experience an important one, though the article's text on this point is cut off.

Strategy and open questions

Corriere della Sera reports that Muse Wonder is a closed model, with the most advanced versions going to paying businesses, a departure from Meta's traditional open source strategy. Zuckerberg told the Financial Times that development will probably proceed much faster from here, and that the company is working on the next leap forward. He also argued that AI can be designed with normal safety limits and developed responsibly. Courrier international reports that Llama 4 disappointed in April 2025, which led Meta to invest tens of billions of dollars in rebuilding its AI leadership and hiring researchers, including Alexandr Wang, who joined with a 14 billion dollar investment in his start-up Scale AI. Autonomous agents raise security and privacy concerns, and Meta says it has strengthened its defenses against cyberattacks and chemical or biological dangers while urging caution in its technical documentation. Some users have questioned how Muse might handle personal information and private conversations.