📖 The AI Tool Bible

Claude Agent SDK vs Mastra

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 
Claude Agent SDK
Agents
Mastra
Agents
TaglineAnthropic's official SDK for building autonomous Claude agents.Open-source TypeScript framework for building, deploying, and observing AI agents and workflows.
CategoryAgentsAgents
PricingFree· Free SDK; API usage billed at Claude ratesFreemium· Free open-source core (Apache 2.0); Enterprise license available
ModelClaude Opus / SonnetMulti-model (90+ providers)
Editorial score8.6 / 10—
Use cases
Claude agentstool useproduction
ai-agentsworkflow-orchestrationragcopilotsmcp-serversagent-observability
Pros
  • Official, well-tested abstractions
  • Same primitives as Claude Code
  • Strong tool-use ergonomics
  • TypeScript + Python SDKs
  • TypeScript-native, fits cleanly into Next.js/Node stacks
  • Apache 2.0 core with no seat or usage limits
  • Built-in evals, traces, and metrics for agent observability
  • Model router across 90+ LLM providers
  • First-class MCP server support
Cons
  • Claude-only
  • Newer than LangGraph/CrewAI
  • TypeScript only; Python shops will look elsewhere
  • Younger ecosystem than LangChain/LlamaIndex
  • Enterprise features are source-available, not OSS
Websitedocs.claude.commastra.ai
Pick Claude Agent SDK if
  • ✅ Official, well-tested abstractions
  • ✅ Same primitives as Claude Code
  • ✅ Strong tool-use ergonomics
  • ✅ TypeScript + Python SDKs
Pick Mastra if
  • ✅ TypeScript-native, fits cleanly into Next.js/Node stacks
  • ✅ Apache 2.0 core with no seat or usage limits
  • ✅ Built-in evals, traces, and metrics for agent observability
  • ✅ Model router across 90+ LLM providers
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Claude Agent SDK vs Mastra — side-by-side comparison · The AI Tool Bible