Mastra
TypeScript AI agent framework by Vercel contributors
About
TypeScript-first framework for building AI agents and workflows. Supports tool use, memory, RAG, and evals with first-class Vercel AI SDK integration.
Choose Mastra when…
- •You're building TypeScript-native agentic workflows
- •You want a structured framework for agent + RAG apps
- •Node.js backend with AI logic is your stack
Builder Slot
The pipeline layer that connects LLM calls, retrieval, and data processing into a workflow
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@mastra/coremastraIntegrates with (4)
Mastra connects to OpenAI's API natively for agent reasoning, tool calling, and structured output generation.
→ GPT-4o-powered Mastra agents with native function calling and real-time streaming support.
Mastra uses Anthropic's API via its Claude connector for agent reasoning.
→ Claude-powered Mastra agents with strong instruction following and long-context tool use.
Mastra integrates with Langfuse via OpenTelemetry, tracing every agent step and LLM call automatically.
→ Out-of-the-box observability for Mastra agents — cost, latency, and full trace quality without custom instrumentation.
Mastra uses the Vercel AI SDK's model interface as its underlying LLM abstraction layer.
→ All Vercel AI SDK-compatible providers are natively available to Mastra agents through one consistent interface.
Pricing
In 1 stack
Ruled out by 1 stack
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