We're excited to release Muse Code (beta), a terminal coding agent powered by Muse Spark 1.2, our newest model. Muse Spark 1.2Muse Spark 1.2 is a coding-focused update to Muse Spark 1.1, with improvements in code generation, complex debugging, codebase understanding, and end-to-end developer workflows. In Muse Spark 1.2, we significantly scaled up training compute on coding tasks while expanding training environment diversity. Co-Training With Muse CodeWe co-trained Muse Spark 1.2 with Muse Code to ensure the model exhibits its best performance and coding usability when paired together. This self-improvement loop helped Muse Spark 1.2 follow complex instructions more precisely than its predecessor.