Meta is stepping into one of AI’s most competitive arenas: software development. Its new Muse Code agent is designed to do more than suggest snippets, putting Meta in a direct contest for the developers increasingly relying on AI to build and maintain products.

The company launched Muse Code in beta on Wednesday, pairing the terminal-based agent with its new Muse Spark 1.2 model. Meta says the tool can tackle complex work across large repositories — from planning a change to writing the code and testing whether it works.¹

That represents a sharper push than Meta had previously signaled. During its first-quarter earnings call in April, CEO Mark Zuckerberg said developer tools were not the company’s central focus, even as he left the door open to coding products. The launch now puts Meta alongside Anthropic’s Claude Code and OpenAI’s Codex, tools that have gained traction by letting agents inspect codebases, run tests and operate with limited supervision.²

Meta’s argument is not only that Muse Code can compete on capability, but that it can compete on price. AI chief Alexandr Wang called it “one of the most affordable coding agents on the market, available globally,” according to reporting on the rollout.² The standard Muse Spark 1.2 tier is priced by tokens, while a cheaper contributor tier requires users to allow their activity to help improve Meta products — a potentially attractive trade-off for startups and individual coders, but a harder sell for teams handling proprietary software.²

Zuckerberg framed the release as a full-task engineering tool, saying Muse Code “takes on complete software engineering tasks across large repos: planning changes, writing code, validating the results.”Mark Zuckerberg (finkd)³ The real test is whether a price-conscious alternative can dislodge developers already paying for Claude Code or Codex subscriptions.

[1] Meta is launching a dedicated coding agent. — “Complex software engineering tasks across large repositories: planning changes, writing code, and validating the results.”

[2] Meta takes on Anthropic's Claude and OpenAI's Codex with its new coding agent — Meta’s pricing and competitive positioning against Claude Code and Codex.

[3] @finkd on X — “Releasing Muse Code in beta today. It's a terminal coding agent that takes on complete software engineering tasks across large repos.”