Release2026-08-05

Meta released Muse Code, a coding assistant that runs in a developer's terminal, alongside a new model called Muse Spark 1.2 that is tuned for writing and debugging code across large codebases. The agent keeps helper processes running for the length of a session and logs every step so it can resume after a crash. Muse Code is in beta and installs only on macOS or Linux; the model is also available through Meta's Model API.

What changed

Muse Spark 1.1 was the current model and Meta had no terminal-based coding agent of its own.

What it unlocks

Running a Meta coding agent in the terminal that keeps helper agents alive through a session and resumes long tasks after a crash.

  • 1,000+ tool calls, up to 24 hours
  • macOS and Linux install

What you need to act on it

  • macOS or Linux
  • install via command line
  • beta access
  • Meta Model API key for API use

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