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Mastra helps you build AI agents and agent-powered apps in TypeScript, then run them long enough to test, measure, and ship. It’s for teams that want agent behavior defined in code, with state, tool use, and evaluation visibility built in.
What makes it stand out is the full lifecycle coverage in the same framework. Instead of treating agents as a one-off chat, you get tracing from model calls through tool calls and handoffs, plus metrics like latency, cost, and model usage. You can also score runs with built-in scorers and store traces and user feedback in versioned datasets for repeatable evals.
Mastra also includes a model router that gives access to thousands of models through a standard interface (see https://mastra.ai/models). If you already write apps in React, Next.js, or Node, Mastra fits into that TypeScript stack, or you can deploy it as a standalone server.
If you want an agent framework that keeps your agent logic typed and testable, while giving you the instrumentation to improve behavior over time, Mastra is built for that.
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