Mastra Code vs. Pi

Feature	Mastra Code	Pi

Tagline	Coding agent that replaces compaction with Observational Memory	A minimal terminal coding harness
Website	https://code.mastra.ai/	https://pi.dev
Language	typescript	typescript
Release Date	December 24, 2025	December 2, 2025
Last Updated	September 4, 2026	August 19, 2026
Provider Type	Independent	Independent
MCP Support	Yes	No
Multi-Agent Support	Yes	Yes
Git Integration	basic	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	ACP (Agent Client Protocol)	None - Terminal only
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent; observation-based	Model-dependent; auto-compaction
Supported Models	Claude, GPT, Gemini and thousands more via Mastra's unified model router, plus custom OpenAI-compatible providers	20+ providers: Anthropic, OpenAI, Google, Mistral, OpenRouter, Groq, Ollama, xAI, Azure, Bedrock
Supported Subscriptions	Claude Code ChatGPT GitHub Copilot SuperGrok	GitHub Copilot Claude Code ChatGPT
Pricing Model	Free, BYOK	BYOK
Free Tier	Yes	Yes
Price Range	Free (BYOK)	Free (BYOK)
Source Code Availability	Open Source (Apache-2.0)	Open Source (MIT)
Source Code	https://github.com/mastra-ai/mastra	https://github.com/badlogic/pi-mono
Development State	active	active