Meta releases Muse Wonder frontier AI models to compete with OpenAI and Anthropic

Meta released two flagship frontier AI models, Muse Wonder and Muse Wonder Full, on October 12, 2026, marking its return to competition with OpenAI and Anthropic. Developed under Alexandr Wang at Meta Superintelligence Labs, the models feature Active Memory and Active Focus capabilities designed for complex long-term agent tasks. Meta claims top-tier benchmark scores in coding and legal analysis, while introducing paid monthly subscription tiers up to $200 to monetize its AI investments.

Model release and deployment

• ▪Meta unveiled two advanced frontier-class AI models, Muse Wonder and Muse Wonder Full, on October 12, 2026
• ▪The Muse Wonder models are accessible through the Meta Model API and the Muse Code software engineering tool
• ▪Meta stated that the Muse Wonder model will power features across its platforms, including the Muse personal agent app

Benchmark performance

• ▪Meta's benchmark testing showed that Muse Wonder achieved higher scores on MemoryBench than Anthropic's Fable and Opus models or OpenAI's Astra model
• ▪Meta stated that the largest version of Muse Wonder outperforms Anthropic's Claude Fable 5.1 and ranks just below Claude Opus 5.5 on the Artificial Analysis Intelligence Index
• ▪Meta reported that Muse Wonder outperforms OpenAI's GPT-6 Astra, Claude Fable 5.1, and Claude Opus 5.5 on benchmarks measuring software development and legal document analysis

Model development and training

• ▪Meta trained the Muse Wonder models using its gigawatt-scale Prometheus data center located in central Ohio
• ▪The Muse Wonder models were internally developed under the code-name Watermelon at Meta Superintelligence Labs led by Alexandr Wang

Memory and context retention features

• ▪Meta highlighted the features Active Memory and Active Focus in Muse Wonder to help AI agents retain user context across long periods and pursue complex goals without stalling
• ▪Research scientist Kavya Kopparapu stated in a video accompanying the Muse Wonder launch that Meta focused on ensuring Muse Wonder can recall important user information across days, weeks, and months

Pricing and subscription plans

• ▪Via the Meta Model API, Muse Wonder is priced at $4.00 per million input tokens and $20.00 per million output tokens
• ▪To access the Muse Wonder model within the Muse personal agent app, users must pay a monthly subscription fee of $20 or $100
• ▪The Muse Wonder Full model is available exclusively to subscribers of the Muse Code software engineering tool under $50 or $200 monthly subscription plans

Safety protections and safeguards

• ▪Meta stated that the Muse Wonder models incorporate enhanced safeguards designed to prevent the generation of outputs related to cyber misuse, hacking, and biological weapons
• ▪Meta CEO Mark Zuckerberg stated on X in September 2026 that Meta delayed the release of its Muse AI models to work on safety protections

Debatable claims

• ▪Meta should open-source its flagship Muse Wonder AI models
• ▪Meta's heavy investment in proprietary frontier AI is paying off