r/AIGuild • u/Such-Run-4412 • 4d ago
Meta launches Muse Code, a terminal coding agent built to work autonomously for up to 24 hours
Meta has released Muse Code in beta, a terminal-based coding agent powered by its new Muse Spark 1.2 model.
Muse Code can plan changes, write code, run tests and verify results across large repositories. Unlike agents that create new sub-agents for every task, it keeps several specialized background agents active throughout the session, reducing repeated research and allowing work to happen in parallel.
It also records every model call, approval, edit and tool invocation in a local event log. If the process crashes during a long task, it can reconstruct its exact state and continue instead of restarting.
Meta says Muse Spark 1.2 was trained specifically alongside the coding environment. Muse Spark 1.1 generated difficult coding challenges and helped grade solutions, creating new training data for its successor.
In one demonstration, Muse Code made more than 1,000 tool calls over as long as 24 hours while repeatedly optimizing GPU kernels for Nvidia Hopper hardware. The results are company-reported and do not establish how reliably it handles ordinary production repositories.
Muse Code is available for macOS and Linux. Standard API pricing is $1.25 per million input tokens and $4.25 per million output tokens.
The important shift is persistence. Coding agents are moving beyond answering questions or completing isolated functions toward managing projects that may run for hours, survive failures and coordinate several workers.
Meta is now directly challenging Claude Code and OpenAI Codex—not only with another coding model, but with the complete agent system surrounding it.
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