Meta Launches Muse Code into General Availability with 1 Million Token Context Window and SDK Preview

My take: Muse Code, Meta's coding agent, exited beta on August 31 with three concrete updates for its general availability release: inter-session messaging, workflow and rewind in the CLI, and a developer preview of the SDK. The agent runs on Muse Spark 1.2 with a 1 million-token context window, and can coordinate parallel sub-agents in isolated worktrees for complex tasks across large repositories.

For anyone already working with a coding agent in their daily workflow, another serious player entering the market is good news. More options mean more competition, and more competition usually translates to better tools and more reasonable pricing. What is worth evaluating is not which company has the biggest name, but which agent integrates best with your stack, your team, and the way you actually work.

If you do not yet have a coding agent in your workflow, the question is not whether to adopt one, but how much longer you can afford to wait.