Claude Agent SDK vs Mastra

Pick two tools from the same category to compare side-by-side.

	Claude Agent SDK Anthropic's official SDK for building production agents on Claude.	Mastra TypeScript-first agent framework with workflows, RAG, memory, evals.
Category	framework	framework
Vendor type	commercial	open source
Pricing	free	free
Strengths	+ First-class Claude features (prompt caching, extended thinking) + Designed around production agent patterns + Compatible with the Skills standard	+ First-class TypeScript / Node ergonomics + Provider-agnostic from day one + Batteries-included (RAG, memory, evals)
Tradeoffs	− Claude-only (cross-provider needs a gateway like Portkey)	− Younger ecosystem vs LangChain/LangGraph − Less Python community overlap
Used in stacks	9	4