mastra.ai

The company's offerings are designed to support the entire lifecycle of AI agent development. Key features include durable, graph-based workflows for orchestrating complex operations, tools for retrieval-augmented generation (RAG) to integrate external knowledge, and comprehensive observability for tracking and debugging. Mastra's framework is modular, allowing developers to use its components independently, and it supports over 40 LLM providers, including OpenAI, Anthropic, and Gemini. The platform is designed for a TypeScript-native environment, providing a structured, type-safe approach to building scalable AI applications. Use cases range from automating customer support and medical transcriptions to generating financial documents and scraping web data.

Mastra operates with a business-friendly Apache 2.0 open-source license, allowing for unrestricted commercial use, and offers a cloud product for deployment, management, and scaling. The company has seen rapid growth and significant investor interest, securing a $500K seed round from Y Combinator in 2025, which was part of a larger $13 million seed round involving over 120 investors, including notable figures like Paul Graham and founders from Vercel, Dropbox, and Replit. The framework serves technology companies and developers building AI-powered products, with clients like Plaid, Replit, and Adobe using it to streamline their AI development processes.