Muse Spark 1.3

meta/muse-spark-1.3

Meta Muse Spark 1.3 is an open-weight multimodal model released in September 2026.

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Context window: 1M
Input: Text
Output: Text
Released: 2026-09-02

Max output: 944K
Weights: Closed
Capabilities: Attachments, Reasoning, Structured, Temperature, Tool call

Pricing

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Performance

Overall capability

59.8/100

Coding: 58.2
Reasoning: 55.9
Professional work: 62.7
Knowledge & language: 57.9


Arena Agent Overall	Professional work	LMArena	2026-11-08
Vibe Code Bench v1.1	Coding	Vals AI	2026-11-05
AA-Analyst AgentMuse Spark 1.3 (Max)	Professional work	Artificial Analysis	2026-11-05
MLCR-AA（Artificial Analysis）Muse Spark 1.3 (Xhigh)	Knowledge & language	Artificial Analysis	2026-11-05
AA-OmniscienceMuse Spark 1.3 (Xhigh)	Knowledge & language	Artificial Analysis	2026-11-05
SciCodeMuse Spark 1.3 (Xhigh)	Coding	Artificial Analysis	2026-11-05
APEX-Agents 1.1	Professional work	Mercor	2026-11-05
Chess Puzzles	Reasoning	Epoch AI	2026-11-05

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ModelRegistry · Catalog updated 2026-11-10