Mastra Code vs. Plandex

Feature	Mastra Code	Plandex

Tagline	Coding agent that replaces compaction with Observational Memory	Open source AI coding agent for large projects and real world tasks
Website	https://code.mastra.ai/	https://github.com/plandex-ai/plandex
Language	typescript	go
Release Date	December 24, 2025	March 14, 2024
Last Updated	September 4, 2026	August 19, 2026
Provider Type	Independent	Independent
MCP Support	Yes	No
Multi-Agent Support	Yes	No
Git Integration	basic	deep
Multi-File Editing	Yes	No
Auto Test Running	No	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	No
Voice Mode	Yes	No
IDE Integration	ACP (Agent Client Protocol)	None - Terminal only
Hooks / Extensions	Yes	No
Web Search	Yes	No
Local Model Support	Yes	Yes
Context Window	Model-dependent; observation-based	2M tokens effective
Supported Models	Claude, GPT, Gemini and thousands more via Mastra's unified model router, plus custom OpenAI-compatible providers	Any OpenAI-compatible models and 400+ models from OpenRouter.
Supported Subscriptions	Claude Code ChatGPT GitHub Copilot SuperGrok	—
Pricing Model	Free, BYOK	Free
Free Tier	Yes	Yes
Price Range	Free (BYOK)	Free (self-hosted)
Source Code Availability	Open Source (Apache-2.0)	Open Source (MIT)
Source Code	https://github.com/mastra-ai/mastra	https://github.com/plandex-ai/plandex
Development State	active	inactive