Muse Spark 1.2 — Model Drop — Dropday.ai

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Muse Spark 1.2

MetaDropped Aug 5, 20261 build1 maker

Co-trained coding model powering persistent multi-agent terminal workflows for long-horizon software projects.

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About this release

What is Muse Spark 1.2?

Muse Spark 1.2 is a coding-focused update to Meta's Muse Spark line, trained jointly with the new Muse Code terminal agent. It improves code generation, complex debugging, and whole-repository understanding while retaining general agentic strengths. The model supports extended sessions with background sub-agents that maintain context across thousands of tool calls and can resume after interruptions via event logging.

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