Meta launches Muse Code, an AI agent for large code bases

In Brief Posted: 2:21 PM PDT · August 5, 2026 Image Credits: David Paul Morris/Bloomberg / Getty Images Lucas Ropek Meta launches Muse Code, an AI agent for large code bases Meta, considered a bit of a straggler in the AI harnesses realm, is making strides to catch up. This week, the company released a new terminal coding agent aimed at programmers looking for assistance with complex tasks across large software code bases. Muse Code, which is currently available in beta, can accomplish “complete software engineering tasks across large repos,” Meta CEO Mark Zuckerberg said in a social media post on Wednesday. Those tasks include “planning changes, writing code, validating the results,” he added. Code, which can be installed with a single command, is powered by Meta’s previously released coding model, Muse Spark. It handles large projects by launching its own agents, which then work simultaneously. “When a job is big enough, it fans out to separate sub-agents working in parallel in isolated worktrees,” Zuckerberg explained. “Your working copy is never touched. In testing we had it build six features for a game simultaneously with no collisions.” The move attempts to position Meta more competitively, and more affordably, with AI Lab peers like OpenAI and its coding agent Codex, and Anthropic with Claude Code. “We think that for a lot of workflows and a lot of use cases, this can be an incredibly good option, especially from a cost perspective,” Alexandr Wang, Meta’s AI chief, who leads Meta Superintelligence Labs, told the Wall Street Journal. Meta has been attempting to grow its AI presence by pouring money into development. In June, it expanded beyond its core focus of using AI to support its advertising business and entered the enterprise AI market with an agent aimed customer service and support. Topics AI , AI , Anthropic , Mark Zuckerberg , Meta , OpenAI October 13 – 15 San Francisco Scale faster. Grow your portfolio. Gain practical expertise. No matter your goal, Disrupt can empower you. Save up to $330 toda y! REGISTER NOW Newsletters See More Subscribe for the industry’s biggest tech news TechCrunch Daily News Every weekday and Sunday, you can get the best of TechCrunch’s coverage. TechCrunch Mobility TechCrunch Mobility is your destination for transportation news and insight. Startups Weekly Startups are the core of TechCrunch, so get our best coverage delivered weekly. StrictlyVC Provides movers and shakers with the info they need to start their day. No newsletters selected. Subscribe By submitting your email, you agree to our Terms and Privacy Notice . Related Startups Trump’s DOJ gains oversight of OpenAI’s green-card employee sponsorships Julie Bort 16 minutes ago Transportation Moove raises $250M to become the backbone of the robotaxi industry Kirsten Korosec 31 minutes ago Venture How Lightspeed found its newest hire … via Instagram DM Dominic-Madori Davis 33 minutes ago Latest in AI In Brief Meta launches Muse Code, an AI agent for large code bases Lucas Ropek 10 seconds ago AI Klaviyo acquires Elias Torres’ Agency in full-circle reunion for tech founders Marina Temkin 1 hour ago AI Jeff Dean and other top AI researchers are leaving Google to launch their own startup Lucas Ropek 2 hours ago