Meta releases Muse Spark Open open-weight model

Meta releases Muse Spark Open, an 816B total / 42B active parameter open-weight model with a 1M token context window, built for coding and agentic work.

This update bears on 3 kinds of work in 2 markets. Highest level accepted: L2 Partial automation.

Highest accepted

L2Partial automation

Work

3

Markets

2

Views

703K

The work it bears on

Highest level first. Open a kind of work to see everything else that moved it.

• L2Partial automation
  Implement tool use and agent workflowsModel applications and agent systems
  L2 Partial automationFrom the publisher only
• L2Partial automation
  Integrate models retrieval and context flowsModel applications and agent systems
  L2 Partial automationFrom the publisher only
• L1Assisted
  Develop business logic and service APIsApplication interfaces and business development
  L1 AssistedFrom the publisher only

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