Meta Launches Muse Code and Undercuts Claude Code by an Order of Magnitude

On August 5, 2026, Meta entered the coding agent market with Muse Code, a terminal agent powered by Muse Spark 1.2. Rather than competing on raw model intelligence, Meta built the most advanced agent harness on the market: multi-agent fan-out, isolated git worktrees, full JSONL audit logging, and pricing up to 10× lower than Claude Code. Here’s what it means for DevOps teams.