Mastra Code vs. OpenBlock

Feature	Mastra Code	OpenBlock

Tagline	Coding agent that replaces compaction with Observational Memory	A self-improving coding agent that handles the full dev lifecycle
Website	https://code.mastra.ai/	https://openblocklabs.com/
Language	typescript	typescript
Release Date	December 24, 2025	March 16, 2026
Last Updated	September 4, 2026	August 19, 2026
Provider Type	Independent	Independent
MCP Support	Yes	Yes
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
Supported Models	Claude, GPT, Gemini and thousands more via Mastra's unified model router, plus custom OpenAI-compatible providers	400+ via OpenRouter (Claude, GPT, Gemini, Grok, open-source)
Supported Subscriptions	Claude Code ChatGPT GitHub Copilot SuperGrok	—
Pricing Model	Free, BYOK	Freemium
Free Tier	Yes	Yes
Price Range	Free (BYOK)	$10-100 (credit-based)
Source Code Availability	Open Source (Apache-2.0)	Proprietary Software
Source Code	https://github.com/mastra-ai/mastra	N/A
Development State	active	active