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Muse Spark

muse family · launched 2026-09-02

MultimodalReasoningToolsStructured
AITopic score64.8#43 overall

Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It improves long-horizon agent collaboration, instruction following, and coding efficiency relative to Muse Spark 1.2.

Evidence coverage5%1 evaluations · 1 institutions
Context / maximum output1M / 943.7ktokens
Cache / input / output$0.15 · $0.1 · $0.2USD per million tokens
Value / freshness88.1 / 84relative value · release freshness
Product profile

What this model supports

Inputtext, image, video, pdf, audio
Outputtext
Knowledge cutoff2026-01-04
WeightsProprietary / hosted
Capability profile

Strengths by domain

Coding—0 public results
Research & reasoning—0 public results
Professional work—0 public results
Knowledge & instruction—0 public results
Behind the score

Every result has a source

Raw results and standardized readings are shown together. Missing tests add neither points nor penalties.

Human preference & indices2 results

AA IndexArtificial Analysis67.11 indexReading 64.8

Imported from Artificial Analysis. The published 0–100 score is used directly; it is not z-score normalized.

Configuration: Muse SparkOpen evidence
Arena TextLMArena1,474.0 EloReading 64.8

Direct LMArena text leaderboard result.

Open evidence
Same builder

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