Updated April 29, 2026
Mastra is a TypeScript-first agent framework for building production AI applications. It provides primitives for agents, workflows, RAG, integrations, and memory with a focus on developer experience and type safety. Mastra is designed for full-stack TypeScript developers who want to build AI features without leaving their existing tech stack.
OpenClaw is an open-source personal AI assistant that runs on your own devices and answers on the channels you already use — WhatsApp, Telegram, Slack, Discord, Signal, iMessage, Microsoft Teams, and more. 347K+ GitHub stars (April 2026), making it the most-starred repository in GitHub history.
Core capabilities each platform advertises.
What each tool does well, and the limitations to keep in mind.
Pros
Cons
Pros
Cons
Surged from 9,000 to over 60,000 stars in just a few days after going viral in late January 2026 — arguably the fastest-growing open-source project in GitHub history.
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Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 500+ models through one gateway.