Muse Code vs. zerostack

Feature	Muse Code	zerostack

Tagline	Meta's coding agent for the terminal and CI, built on Muse Spark	Minimal Rust coding agent optimized for memory footprint
Website	https://developer.meta.com/ai/products/muse-code/	https://gi-dellav.github.io/zerostack/
Language	rust	rust
Release Date	August 5, 2026	May 12, 2026
Last Updated	September 4, 2026	September 4, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	deep
Multi-File Editing	Yes	Yes
Auto Test Running	No	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	Yes	No
IDE Integration	None - terminal only	Zed (via ACP), Neovim (via CodeCompanion.nvim + ACP)
Hooks / Extensions	Yes	Yes
Web Search	No	Yes
Local Model Support	No	Yes
Context Window	1M tokens	Model-dependent; auto-compaction
Supported Models	Muse Spark 1.2, Muse Spark 1.1	OpenRouter (default), OpenAI, Anthropic, Gemini, Ollama, plus unlimited custom OpenAI-compatible endpoints (vLLM, LiteLLM, enterprise gateways)
Pricing Model	Usage Based	Free, BYOK
Free Tier	No	Yes
Price Range	Usage-based (from $0.10/M tokens)	Free (BYOK)
Source Code Availability	Proprietary Software	Open Source (GPL-3.0)
Source Code	N/A	https://github.com/gi-dellav/zerostack
Development State	active	active