It runs in the terminal, it is in beta and it is powered by Muse Spark. Its distinguishing feature: it spawns parallel sub-agents, each in an isolated environment, so several features can be built at once without colliding — and without touching your working copy.
Muse Code, announced on August 5, is Meta's coding agent for large code bases. It installs with a single command, runs from the terminal and is powered by the Muse Spark model. It is available in beta.
How it works: instead of working sequentially on your local copy, it spawns sub-agents that run in parallel in isolated environments. Meta's example is "building six features for a game simultaneously with no collisions". Your working copy is left untouched.
Why it matters: competition in coding agents is no longer about who writes the better function, but about who best orchestrates many tasks at once across a real repository. With Meta in, the three majors — Anthropic, OpenAI and now Meta — are competing in the same format: terminal, agent, repository.
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