Meta releases Muse Spark Open, a massive open-weight coding model

How it developed

1. October 15, 2026Together AI BlogWhere it started

   Meta Muse Spark Open launches on Together AI

   Meta Muse Spark Open is now live on Together AI with a 1M-token context window for agentic coding.

2. October 15, 2026Hugging Face Blog

   Meta releases Muse Spark Open, a massive open-weight coding model