Meta released Muse Spark 1.3 for agentic coding

Meta released Muse Spark 1.3 in Muse Code and the Meta Model API. Max reasoning stays gated pending more safety testing. Meta says internal compares vs 1.2 showed about 20% fewer tool calls and 25% fewer tokens on agentic coding work. Context stays 1M tokens. Weights stay closed.

01

web · Meta AI Research

Introducing Muse Spark 1.3

Official Meta AI Research blog: Muse Spark 1.3 rolls out in Muse Code and the Meta Model API; max reasoning gated pending more safety testing; 1M context; closed weights.

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02

web · MarkTechPost

MarkTechPost on Muse Spark 1.3 tool-call and token cuts

Secondary coverage of Meta's ~20% fewer tool calls and ~25% fewer tokens claim vs Muse Spark 1.2 on agentic coding work.

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