Muse Spark 1.1
Meta's broadly deployed multimodal reasoning model for long-horizon agentic work, multi-agent orchestration, computer use, coding, and external tool operation.
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Why this model scores 81.0
Muse Spark 1.1 combines frontier coding and multimodal reasoning with million-token context management, multi-agent delegation, external tools, and computer use. Consumer availability and a public-preview API create broad reach. Meta reports frontier-risk, jailbreak, and prompt-injection testing within its scaling framework, which lowers but does not remove residual misuse and control difficulty.
News tied to Muse Spark 1.1
The model score of 81.0 rates this model's risk profile. The overall Doom Index of 66.8 measures the complete temporally weighted evidence record. These values answer different questions.
Each article's current Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores use a bounded temporal offset around their technical profile, but never feed back into the overall index.
Meta releases Muse Spark 1.1 with public agent API access
Meta released Muse Spark 1.1 through its consumer assistant and a public-preview API, adding long-horizon context management, multi-agent orchestration, tool use, and computer control to a broadly accessible frontier model.
- Full item contribution
- +0.16
- Muse Spark 1.1 equal share
- +0.16
Model score history
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R5
Doom Score 81.0
Source-backed model availability audit using the model's existing primary or authoritative catalogue evidence. Exact-version evidence chronology replayed under temporal-monthly-pressure-v4.
12 Aug 2026 -
R4
Doom Score 81.0
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-142416 under temporal-monthly-pressure-v4.
12 Aug 2026 -
R3
Doom Score 81.2
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-132112 under fixed-sensitivity-v3.
12 Aug 2026 -
R2
Doom Score 82.1
Full-corpus evidence recalculated after run intensive-backfill-20260811-191225 under bounded-corpus-v2.
11 Aug 2026 -
R1
Doom Score 80.9
Initial exact-version profile from Meta's dated launch and linked Muse Spark 1.1 evaluation report.
11 Aug 2026