Zero vs. Mastra Code

Feature	Zero	Mastra Code

Tagline	Open-source Go coding agent for the terminal, 25+ providers	Coding agent that replaces compaction with Observational Memory
Website	https://zero.gitlawb.com/	https://code.mastra.ai/
Language	go	typescript
Release Date	May 28, 2026	December 24, 2025
Last Updated	September 4, 2026	September 4, 2026
Provider Type	Independent	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	basic
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	Yes	Yes
IDE Integration	Zed, JetBrains, Neovim (via ACP)	ACP (Agent Client Protocol)
Hooks / Extensions	Yes	Yes
Web Search	No	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent; auto-compaction	Model-dependent; observation-based
Supported Models	25+ providers: GitLawb OpenGateway (default), AI/ML API, OpenAI, Anthropic, Gemini, xAI, ChatGPT/Codex, OpenRouter, Groq, DeepSeek, Together, Fireworks, Qwen, Moonshot, MiniMax, Bedrock, Vertex, Z.ai, KiloCode, OpenCode Zen/Go; local via Ollama and LM Studio	Claude, GPT, Gemini and thousands more via Mastra's unified model router, plus custom OpenAI-compatible providers
Supported Subscriptions	ChatGPT SuperGrokX Premium+	Claude Code ChatGPT GitHub Copilot SuperGrok
Pricing Model	Free, BYOK	Free, BYOK
Free Tier	Yes	Yes
Price Range	Free (BYOK)	Free (BYOK)
Source Code Availability	Open Source (MIT)	Open Source (Apache-2.0)
Source Code	https://github.com/Gitlawb/zero	https://github.com/mastra-ai/mastra
Development State	active	active