Mastra Code vs. Muse Code

Feature	Mastra Code	Muse Code

Tagline	Coding agent that replaces compaction with Observational Memory	Meta's coding agent for the terminal and CI, built on Muse Spark
Website	https://code.mastra.ai/	https://developer.meta.com/ai/products/muse-code/
Language	typescript	rust
Release Date	December 24, 2025	August 5, 2026
Last Updated	September 4, 2026	September 4, 2026
Provider Type	Independent	AI Lab
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	basic	deep
Multi-File Editing	Yes	Yes
Auto Test Running	No	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	Yes	Yes
IDE Integration	ACP (Agent Client Protocol)	None - terminal only
Hooks / Extensions	Yes	Yes
Web Search	Yes	No
Local Model Support	Yes	No
Context Window	Model-dependent; observation-based	1M tokens
Supported Models	Claude, GPT, Gemini and thousands more via Mastra's unified model router, plus custom OpenAI-compatible providers	Muse Spark 1.2, Muse Spark 1.1
Supported Subscriptions	Claude Code ChatGPT GitHub Copilot SuperGrok	—
Pricing Model	Free, BYOK	Usage Based
Free Tier	Yes	No
Price Range	Free (BYOK)	Usage-based (from $0.10/M tokens)
Source Code Availability	Open Source (Apache-2.0)	Proprietary Software
Source Code	https://github.com/mastra-ai/mastra	N/A
Development State	active	active