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Meta releases Muse Wonder and Muse Wonder Full for developers and subscribers
Meta announced the two models on 12 October and calls them its most capable to date; its benchmark claims rest on its own evaluations.
Check our sources · 10 facts from 2 sources
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Key points
- Meta announced Muse Wonder and Muse Wonder Full on 12 October 2026 and calls them its most capable models to date.
- Meta says Muse Wonder is available through the Meta Model API and Muse Code, and Muse Wonder Full to Muse Code subscribers.
- Meta's research blog says the series achieves state-of-the-art results across key benchmarks, naming Harvey's Legal Agent Benchmark, FocusBench and SWE-Marathon.
What happened
Meta announced two models, Muse Wonder and Muse Wonder Full, on 12 October 2026. Meta calls them its most capable models to date, built for personal and professional agentic tasks.
Muse Wonder is available to developers and builders through the Meta Model API and Muse Code. Muse Wonder Full is available to Muse Code subscribers. Meta says Muse Wonder will soon power experiences in Muse and will roll out first to subscribers.
Meta says the models have two features, Active Memory, which carries what matters across conversations, and Active Focus, which keeps working toward a goal when a task gets hard.
Meta's research blog says the series achieves state-of-the-art results across key benchmarks for personal and professional agents, memory and coding, and names Harvey's Legal Agent Benchmark, FocusBench and SWE-Marathon. Meta says a full report with additional safety evaluations will be available soon.
Underlined sentences link to the facts we checked. Dotted words open a short explainer.
Fact 1 of 10 · from Meta, 12 Oct 2026
Introducing Muse Wonder and Muse Wonder Full: Frontier Models for Agents ... October 12, 2026 ... Meta is introducing Muse Wonder and Muse Wonder Full, our most capable models to date
Fact 2 of 10 · from Meta, 12 Oct 2026
Meta is introducing Muse Wonder and Muse Wonder Full, our most capable models to date, built to deliver state-of-the-art performance on personal and professional agentic tasks — from navigating an insurance claim to making sense of a lease to building a working app.
Fact 3 of 10 · from Meta, 12 Oct 2026
Muse Wonder is available today for developers and builders through the Meta Model API and Muse Code while Muse Wonder Full is available today for Muse Code subscribers.
Fact 4 of 10 · from Meta, 12 Oct 2026
Muse Wonder Full is available today for Muse Code subscribers.
Fact 5 of 10 · from Meta, 12 Oct 2026
Muse Wonder will soon power experiences in Muse, and will roll out first to subscribers.
Fact 8 of 10 · from Meta, 12 Oct 2026
A full report with additional safety evaluations will be available soon.
What it means for you
Our viewThe state-of-the-art statement is Meta's own, about Meta's own evaluation, and the claims we checked carry no scores, so there is nothing yet to compare with other models. Meta says a full report with additional safety evaluations will be available soon; it is not published.
Active Memory and Active Focus are Meta's descriptions of its features. If you build agents, try Muse Wonder through the Meta Model API on one of your own long tasks, and wait for the report before relying on the benchmark names.
It adds no new facts.
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Check our sources
Every sentence above is checked against these 2 sources.
1 Introducing Muse Wonder and Muse Wonder Full
Open the source archived copy-
Meta announced two models, Muse Wonder and Muse Wonder Full, in a post dated 12 October 2026.
citeIntroducing Muse Wonder and Muse Wonder Full: Frontier Models for Agents ... October 12, 2026 ... Meta is introducing Muse Wonder and Muse Wonder Full, our most capable models to date
-
Meta's post calls the models "our most capable models to date, built to deliver state-of-the-art performance on personal and professional agentic tasks."
citeMeta is introducing Muse Wonder and Muse Wonder Full, our most capable models to date, built to deliver state-of-the-art performance on personal and professional agentic tasks — from navigating an insurance claim to making sense of a lease to building a working app.
-
Meta's post says "Muse Wonder is available today for developers and builders through the Meta Model API and Muse Code".
citeMuse Wonder is available today for developers and builders through the Meta Model API and Muse Code while Muse Wonder Full is available today for Muse Code subscribers.
-
Meta's post says "Muse Wonder Full is available today for Muse Code subscribers."
citeMuse Wonder Full is available today for Muse Code subscribers.
-
Meta's post says "Muse Wonder will soon power experiences in Muse, and will roll out first to subscribers."
citeMuse Wonder will soon power experiences in Muse, and will roll out first to subscribers.
-
Meta's post says the models have Active Memory, "the ability to carry what matters to you across conversations".
citewe've built our new models to have Active Memory, the ability to carry what matters to you across conversations and bring back the details that are relevant to the task at hand.
-
Meta's post says the models have Active Focus, "the ability to keep working toward your goal when a task gets hard".
citeThey're also equipped with Active Focus, the ability to keep working toward your goal when a task gets hard, try other approaches, recover from errors, and follow through
-
Meta's post says "A full report with additional safety evaluations will be available soon."
citeA full report with additional safety evaluations will be available soon.
2 Muse Wonder: A Frontier Model For Personal & Professional AI Agents
Open the source archived copy-
Meta's research blog says the Muse Wonder series "achieves state-of-the-art results across key benchmarks for personal and professional agents, memory, and coding."
citeThe Muse Wonder series achieves state-of-the-art results across key benchmarks for personal and professional agents, memory, and coding.
-
Meta's research blog names Harvey's Legal Agent Benchmark (LAB), FocusBench and SWE-Marathon.
citeHarvey's Legal Agent Benchmark (LAB), for example, requires models to work with source documents and follow detailed instructions to produce legal work products. ... We evaluate focus through FocusBench and sustained execution through SWE-Marathon, which tests work on long-running software projects.
Every sentence above is checked against these 2 sources. Each fact has its own address you can cite.
Source 1 · Meta · 12 Oct 2026
Introducing Muse Wonder and Muse Wonder Full
Meta announced two models, Muse Wonder and Muse Wonder Full, in a post dated 12 October 2026.
Introducing Muse Wonder and Muse Wonder Full: Frontier Models for Agents ... October 12, 2026 ... Meta is introducing Muse Wonder and Muse Wonder Full, our most capable models to date
Meta's post calls the models "our most capable models to date, built to deliver state-of-the-art performance on personal and professional agentic tasks."
Meta is introducing Muse Wonder and Muse Wonder Full, our most capable models to date, built to deliver state-of-the-art performance on personal and professional agentic tasks — from navigating an insurance claim to making sense of a lease to building a working app.
Meta's post says "Muse Wonder is available today for developers and builders through the Meta Model API and Muse Code".
Muse Wonder is available today for developers and builders through the Meta Model API and Muse Code while Muse Wonder Full is available today for Muse Code subscribers.
Show all 8 factsShow fewer facts
Meta's post says "Muse Wonder Full is available today for Muse Code subscribers."
Muse Wonder Full is available today for Muse Code subscribers.
Meta's post says "Muse Wonder will soon power experiences in Muse, and will roll out first to subscribers."
Muse Wonder will soon power experiences in Muse, and will roll out first to subscribers.
Meta's post says the models have Active Memory, "the ability to carry what matters to you across conversations".
we've built our new models to have Active Memory, the ability to carry what matters to you across conversations and bring back the details that are relevant to the task at hand.
Meta's post says the models have Active Focus, "the ability to keep working toward your goal when a task gets hard".
They're also equipped with Active Focus, the ability to keep working toward your goal when a task gets hard, try other approaches, recover from errors, and follow through
Meta's post says "A full report with additional safety evaluations will be available soon."
A full report with additional safety evaluations will be available soon.
Source 2 · Meta · 12 Oct 2026
Muse Wonder: A Frontier Model For Personal & Professional AI Agents
Meta's research blog says the Muse Wonder series "achieves state-of-the-art results across key benchmarks for personal and professional agents, memory, and coding."
The Muse Wonder series achieves state-of-the-art results across key benchmarks for personal and professional agents, memory, and coding.
Meta's research blog names Harvey's Legal Agent Benchmark (LAB), FocusBench and SWE-Marathon.
Harvey's Legal Agent Benchmark (LAB), for example, requires models to work with source documents and follow detailed instructions to produce legal work products. ... We evaluate focus through FocusBench and sustained execution through SWE-Marathon, which tests work on long-running software projects.
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