Meta's Muse Code agent tackles 24-hour kernel optimization marathons

Muse Code and Muse Spark 1.2

Meta AI has released Muse Code (beta), a terminal coding agent powered by the new Muse Spark 1.2 model. Muse Code coordinates persistent subagents, uses a replay-exact event log for crash recovery, and ships with planning and stress-testing skills. Muse Spark 1.2, co-trained with Muse Code, shows gains in code generation, debugging, and long-horizon tasks. In a case study, the agent iteratively optimized GPU kernels over 1,000+ tool calls, achieving substantial speedups.