- Context
- 1Mtokens
- Released
- 1mo ago
Muse Wonder Full is a Meta model that launches, alongside Muse Wonder, the Muse Wonder series, framed in the announcement as the next step after Muse Spark on the company's scaling ladder. Meta claims it leads on personal and professional agent tasks, attributing this to features it calls Active Memory and Active Focus. The model is built for agentic work including coding, long-running software projects, and domain tasks in law, finance, and health.
- Language model
- 1M context
- Reasoning
- Tools
How it compares
PremiumA premium line the lab sells above its own flagship, for the hardest work at the highest price.
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Sign inAdditional source evidence
- Source model
- meta/muse-wonder-full
- Source family
- muse
- Last updated
- 2026-10-12
- Model context
- 1M
- Open weights
- No
- File attachments
- Yes
- Reasoning
- Yes
- Tool calling
- Yes
- Temperature control
- Yes
Published benchmarks
| Benchmark | Score | Evaluation details | Evidence |
|---|---|---|---|
| Harvey Legal Agent Benchmark | 13.1 · all-pass rate | max effort; Artificial Analysis LAB-AA · 1.1 · 2026-10-12 | Source |
| Finance Agent | 59.1 · accuracy | Vals AI private test set · max effort · v2 · 2026-10-12 | Source |
| HealthBench Professional | 62.3 · length-normalized weighted rubric score | max effort · 2026-10-12 | Source |
| AutomationBench | 45.4 · strict pass@1 | max effort; Artificial Analysis AutomationBench-AA · 2026-10-12 | Source |
| GDP.pdf | 33.2 · score | max effort · 2026-10-12 | Source |
| JobBench | 75.3 · mean reward | max effort · 2026-10-12 | Source |
| OSWorld | 78.4 · mean partial score | max effort · 2.1 · 2026-10-12 | Source |
| OSWorld | 39.4 · binary completion rate | max effort · 2.1 · 2026-10-12 | Source |
| Terminal-Bench | 57.1 · accuracy | max effort; Artificial Analysis Terminal-Bench 4.0-AA · 4.0 · 2026-10-12 | Source |
| DeepSWE | 79 · pass@1 | max effort · 1.1 · 2026-10-12 | Source |
| SWE-Marathon | 57.5 · pass@1 | xhigh effort · 2026-10-12 | Source |
| ProgramBench | 59 · share of rollouts passing at least 95% of tests | mini-swe-agent · max effort · 2026-10-12 | Source |
| Artificial Analysis Intelligence Index | 56 · index score | max effort · 4.3 · 2026-10-12 | Source |
Official references
Complete source record (JSON)
{
"id": "meta/muse-wonder-full",
"name": "Muse Wonder Full",
"description": "Muse Wonder Full is the most capable model in Meta's Muse Wonder series, built for long-running professional agents and ultra-long-horizon software engineering. It shares Muse Wonder's Active Memory and Active Focus capabilities and generally scores higher on Meta's agentic and coding evaluations.",
"family": "muse",
"last_updated": "2026-10-12",
"attachment": true,
"reasoning": true,
"tool_call": true,
"temperature": true,
"modalities": {
"input": [
"text",
"image",
"video",
"audio"
],
"output": [
"text"
]
},
"limit": {
"context": 1048576
},
"benchmarks": [
{
"name": "Harvey Legal Agent Benchmark",
"score": 13.1,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "all-pass rate",
"variant": "max effort; Artificial Analysis LAB-AA",
"version": "1.1",
"date": "2026-10-12"
},
{
"name": "Finance Agent",
"score": 59.1,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "accuracy",
"variant": "max effort",
"dataset": "Vals AI private test set",
"version": "v2",
"date": "2026-10-12"
},
{
"name": "HealthBench Professional",
"score": 62.3,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "length-normalized weighted rubric score",
"variant": "max effort",
"date": "2026-10-12"
},
{
"name": "AutomationBench",
"score": 45.4,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "strict pass@1",
"variant": "max effort; Artificial Analysis AutomationBench-AA",
"date": "2026-10-12"
},
{
"name": "GDP.pdf",
"score": 33.2,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "score",
"variant": "max effort",
"date": "2026-10-12"
},
{
"name": "JobBench",
"score": 75.3,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "mean reward",
"variant": "max effort",
"date": "2026-10-12"
},
{
"name": "OSWorld",
"score": 78.4,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "mean partial score",
"variant": "max effort",
"version": "2.1",
"date": "2026-10-12"
},
{
"name": "OSWorld",
"score": 39.4,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "binary completion rate",
"variant": "max effort",
"version": "2.1",
"date": "2026-10-12"
},
{
"name": "Terminal-Bench",
"score": 57.1,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "accuracy",
"variant": "max effort; Artificial Analysis Terminal-Bench 4.0-AA",
"version": "4.0",
"date": "2026-10-12"
},
{
"name": "DeepSWE",
"score": 79,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "pass@1",
"variant": "max effort",
"version": "1.1",
"date": "2026-10-12"
},
{
"name": "SWE-Marathon",
"score": 57.5,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "pass@1",
"variant": "xhigh effort",
"date": "2026-10-12"
},
{
"name": "ProgramBench",
"score": 59,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "share of rollouts passing at least 95% of tests",
"harness": "mini-swe-agent",
"variant": "max effort",
"date": "2026-10-12"
},
{
"name": "Artificial Analysis Intelligence Index",
"score": 56,
"source": "https://research.meta.ai/static/muse-wonder-model-card",
"metric": "index score",
"variant": "max effort",
"version": "4.3",
"date": "2026-10-12"
}
],
"release_date": "2026-10-12",
"open_weights": false,
"links": [
{
"url": "https://research.meta.ai/blog/muse-wonder",
"label": "Announcement",
"type": "announcement"
},
{
"url": "https://research.meta.ai/static/muse-wonder-model-card",
"label": "Model card",
"type": "model_card"
}
]
}Frequently asked questions
Capabilities and specs
The context window of Muse Wonder Full is 1M tokens (1,048,576). A maximum output length is not specified.
No, Muse Wonder Full cannot read images, audio, video or PDFs. Its only input modality is text.
Yes, Muse Wonder Full supports tool calling (function calling).
Yes, Muse Wonder Full supports a reasoning mode.
Quality and benchmarks
On Arena WebDev, Muse Wonder Full ranks 8 with a score of 1723. On Agent Arena, it ranks 9 with a score of 0.1.
The closest alternatives are MiniMax-M3.1-Flash-Preview by MiniMax, LongCat-2.5-Preview by Meituan, and LongCat-2.5 by Meituan. They were matched on model kind and release date, with no comparable price.
MiniMax-M3.1-Flash-PreviewMuse Wonder Full vs MiniMax-M3.1-Flash-PreviewLongCat-2.5-PreviewMuse Wonder Full vs LongCat-2.5-PreviewLongCat-2.5Muse Wonder Full vs LongCat-2.5
The best open-weight alternative is Kimi K3, the highest-ranked open-weight model on Arena Text at rank 19. Muse Wonder Full itself is closed.
Licensing and access
No, Muse Wonder Full is closed. Its license is Proprietary.
Basics
Muse Wonder Full was made by Meta and released on October 12, 2026.
Generated from Vertical Tabs data, updated November 11, 2026.

Discussion
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