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Muse Spark 1.3

muse

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.

Context
1,048,576
Output
131,072
Release date
2026-09-02
Open weights
No

Availability from providers