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Mastra

LLM Orchestrators

Overview

An open-source framework for building and orchestrating AI agents with TypeScript. Mastra provides a unified layer for managing agent state, tools, and workflows with built-in observability and evaluation.

Mastra is a TypeScript framework for building agents and workflows, with primitives for state, tools, memory, RAG, and built-in observability and evals. From the Gatsby team, it focuses on developer experience and type safety. It targets JS/TS developers who want production-grade agentic apps.

Key Features

TypeScript-native agent framework
Workflows, tools, and memory
Built-in RAG support
Observability and evals
Open-source

Best For

JavaScript/TypeScript developers building production agentic applications.

Pros & Cons

Pros

Strong TS developer experience
Batteries-included primitives
Open-source

Cons

JS/TS ecosystem specific
Younger framework

Pulse Verdict

“The TypeScript native for agents. Mastra bridges the gap between raw LLM calls and production-grade agentic workflows with a focus on developer experience and type safety.”

Pricing

Open-source and free; you supply model access.

Pricing changes often — confirm current plans on the official site.

Visit Official Website →

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An open-source low-code tool for building customized LLM orchestration flows. It provides a visual builder for designing multi-agent systems and complex RAG workflows.

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ModelFusion

An open-source TypeScript library for building multi-modal AI applications, chatbots, and agents. It provides a unified API for integrating various LLMs, image generators, and tools with a focus on type safety and transparency.