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Muse Spark 1.3

Muse Spark 1.3

Frontier Vision Meta

Meta's agentic and coding model, served on Meta Model API. Built for multi-step tool loops, software engineering, and long-context reasoning, with parallel tool calls and reasoning that carries across turns. 1M context window.

Try on Simtheory
Qwen 3.8 Max Frontier Claude 4.5 Sonnet Frontier Claude 4.5 Sonnet (thinking) Frontier Claude 4.6 Opus Frontier Claude 4.6 Opus Max Frontier Claude 4.6 Sonnet Frontier Claude 4.6 Sonnet Max Frontier Claude 4.7 Opus Frontier Claude 4.7 Opus Max Frontier Claude Fable 5 Frontier

Specifications

Context window 1,048,576 tokens
Max output 262,144 tokens
Knowledge cutoff July 2026
Multipart messages No
Vision capabilities Yes

Default Parameters

Temperature 0.3
Top P 1.0
Frequency penalty 0.0
Presence penalty 0.0
Top K 40

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