Meta launches Muse Code, its first coding agent

Meta Superintelligence Labs shipped Muse Code in beta on August 5, 2026 — a terminal-based coding agent that plans, implements, and validates multi-file changes across large repositories using persistent sub-agents. It runs on a new model, Muse Spark 1.2, co-trained alongside it. Pay-as-you-go API pricing is $1.25/$4.25 per million input/output tokens, with a cheaper $0.10/$0.20 contributor tier.

Why it matters

It's Meta's first coding-specific product and a direct entry into the Claude Code / Codex / Antigravity CLI category, signaling Meta now sees agentic coding tools as core to its AI push rather than a byproduct of general-purpose models.

Who should care

Developers already using terminal-based coding agents and comparing options

What you can do

Muse Code is available now in beta via pay-as-you-go API pricing.