Meta Ships Its First Terminal Coding Agent, Powered by Muse Spark 1.2

Muse Code entered beta on macOS and Linux, running persistent background agents that plan, implement and validate changes across large repositories. It is powered by Muse Spark 1.2, a coding-focused update to July’s 1.1 with a 1M-token context window on the Meta Model API. The showcase claim is duration rather than accuracy: the model wrote, compiled, profiled and iteratively improved GPU kernels across more than 1,000 tool calls, with individual runs lasting up to 24 hours. Meta published no comparative benchmark table and no pricing, which makes independent evaluation against rival coding models impossible for now.