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Meta's[2][3] newsroom post is dated October 12, 2026 (published 17:08 UTC) and says Muse Wonder 'is available today' through the Meta Model API and Muse Code; the model card lists 'Date of Release October 12, 2026'.- Start
- Oct 12, 202690% CONFIDENCEsource
Muse Wonder and Muse Wonder Full Released
Meta releases Muse Wonder and Muse Wonder Full, its most capable models yet, built around 'Active Memory' and 'Active Focus' for personal and professional agents; Muse Wonder is live on the Meta Model API and Muse Code, Wonder Full for Muse Code subscribers.
- Meta released the Muse Wonder series, Muse Wonder and Muse Wonder Full, on 12 October 2026 as its "most capable models" yet, aimed at personal and professional agentic tasks[1]
- Muse Wonder is available now through the Meta Model API and Muse Code; Muse Wonder Full is available now to Muse Code subscribers; Muse Wonder will "soon power experiences in Muse", rolling out to subscribers first[2]
- Meta says it was trained at its gigawatt-scale Prometheus data center and builds on the Muse Spark scaling approach, 14 months after it began overhauling its AI efforts[2]
Notable features
- Active Memory carries important context across conversations and retrieves what is relevant to the task; Active Focus keeps working through blockers, tries alternative approaches, asks for clarification and checks in before important actions[2]
- Evaluated on law (Harvey LAB-AA), finance (Vals Finance Agent V2), health (HealthBench Pro), memory (MemoryBench), long-horizon coding (SWE-Marathon, DeepSWE, Terminal-Bench 4.0) and Artificial Analysis' Intelligence Index v4.3, against GPT-6 Astra, Claude Fable 5.1 and Claude Opus 5.5 at max reasoning effort; Meta's model card notes competitor runs are best-effort and some rows are not common-harness comparisons[3]
- The model card lists text, image, video and audio input, text output and a 1M-token context[3]
Safety
- Under Meta's Superintelligence Scaling Framework, Meta does not rule out the high threshold in chemical and biological risk without mitigations, so it applies safety post-training and system-level classifiers; cyber and loss of control were rated moderate or lower, and a fuller safety report is promised[3]
Context
- It follows Muse Spark 1.3 (2 September 2026) and replaces the Spark line at the top of Meta's range; no independent benchmark write-up had been published at posting time, so the headline claims are Meta's own
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