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Muse Spark 1.3

muse family · launched 2026-09-02

MultimodalReasoningToolsStructured
AITopic score71.6#10 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 coverage3%1 evaluations · 1 institutions
Context / maximum output1M / 131.1ktokens
Cache / input / output$1 · $1.25 · $4.25USD per million tokens
Value / freshness70.5 / 87relative value · release freshness
Product profile

What this model supports

Inputtext, image, video
Outputtext
Knowledge cutoffNot disclosed
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 Analysis71.55 indexReading 71.6

Imported from a directly fetched third-party leaderboard.

Configuration: Muse Spark 1.3Open evidence
Arena TextLMArena1,490.0 EloReading 71.6

Direct LMArena text leaderboard result.

Open evidence
Same builder

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