Muse Code
A coding agent for your most complex coding workflows. Build, debug and ship with Muse Code.
Meta's terminal-based AI coding agent that plans, writes, and validates code across large repositories.
Muse Code homepage and subscription plans
Overview
What is Muse Code?
A coding agent for your most complex coding workflows. Build, debug and ship with Muse Code.
Muse Code is Meta's terminal-based AI coding agent for complex software engineering work across large repositories. It plans changes, writes code, and validates the results, coordinating multiple agents in parallel while keeping specialized background agents alive through a session. Every action is recorded in a local event log, so sessions are fully auditable and can be resumed after interruptions. As of October 2026, Muse Code runs on Meta's Muse Wonder models — Muse Wonder on every subscription plan, and Muse Wonder Full on the Power and Maximum plans. Available for macOS and Windows; installs with a single command from dev.meta.ai. Subscriptions: Everyday $5/mo, High $15/mo, Power $50/mo, Maximum $200/mo.
Platforms and languages
Muse Code Availability
Platforms
Languages
Capabilities
Muse Code Key Features
Multi-agent by default
Multiple agents coordinate on every task — workers in parallel, reviewers in the background — so large refactors ship faster without losing oversight.
Fully auditable sessions
Model calls, tool runs, approvals, and code edits are recorded in a local event log. Interrupted sessions can be resumed with the muse resume command.
Persistent background agents
Specialized background agents stay active throughout a session instead of being recreated for each subtask, cutting re-exploration of the codebase.
Isolated git worktrees
Parallel tasks run in isolated git worktrees, so experimental changes never touch the developer's working copy.
Planning and review commands
Built-in commands for approval-gated task planning (/plan) and for stress-testing proposed changes (/grill) before they land.
Plans and access
Muse Code Pricing
Paid
Common questions
Muse Code FAQs
What is Muse Code?
Muse Code is Meta's terminal-based coding agent. It takes on complete software engineering tasks across large codebases: planning changes, writing code, running checks, and validating the results — with multiple agents working in parallel and a full audit trail of every action.
Which platforms does Muse Code support?
The product page lists macOS and Windows as supported, with a one-command install (curl https://dev.meta.ai/install.sh | bash). Linux was supported during the August 2026 beta.
How much does Muse Code cost, and which model do I get?
Four monthly plans: Everyday $5, High $15, Power $50, and Maximum $200. Every plan includes Muse Wonder; the stronger Muse Wonder Full model is available only on the Power and Maximum plans.
Which AI model powers Muse Code?
As of October 2026, Muse Code runs on Meta's Muse Wonder models (Muse Wonder on all plans, Muse Wonder Full on Power and Maximum). It launched in August 2026 on Muse Spark 1.2.
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