Meta Launches Muse Code: New AI Coding Agent Challenges OpenAI & Anthropic
Meta has entered the AI coding-agent market with the beta launch of Muse Code, a terminal-based assistant powered by the Muse Spark 1.2 model. Introduced on August 5, 2026, the tool is designed for repository-scale software development, enabling developers to plan code changes, edit files, execute commands, validate results and coordinate persistent background subagents. Its restart-safe local event log also allows interrupted tasks to resume without losing completed progress. Unlike traditional AI coding assistants that mainly generate code suggestions, Muse Code is built to work directly within terminal and CI workflows. It supports built-in planning and execution commands while enabling asynchronous background agents to continue analyzing repositories and preparing tasks. Meta is also competing on affordability, offering lower token pricing than many rivals, although organizations handling proprietary code should carefully review the contributor tier's data-use terms. Competit...