Mastra Alternatives

Direct alternatives to Mastra

If you came here from "mastra alternatives", you probably want another framework for building AI agents and workflows, with a similar developer experience. Mastra is TypeScript-first with built-in workflows, tools, and integrations, which narrows the field. The closest direct replacements:

• LangGraph: agent and workflow orchestration from the LangChain team. Python-first (with a TypeScript client) and the most established option in the category. Strong if your team is already in the LangChain ecosystem.
• CrewAI: Python framework for multi-agent collaboration with role-based agent design. Smaller surface area than LangGraph, easier learning curve.
• Pydantic AI: Python framework from the Pydantic team. Type-safe agent building with structured outputs as a first-class concern.
• Vercel AI SDK: TypeScript-first like Mastra, lighter weight and more focused on chat/streaming UI primitives than full agent orchestration. Good fit when the app side matters more than the workflow side.
• OpenAI Agents SDK: newer, cross-language. Tighter integration with OpenAI's tool-use and reasoning APIs.
• Letta: agent framework built around persistent memory as a first-class concern, with a hosted runtime alongside the open-source library. Relevant when agents need to remember across sessions rather than per-run.
• Google ADK: Google's agent development kit, with a similar batteries-included stance on tools and workflows.
• Smolagents: minimal Python framework from Hugging Face, built around agents that write code to act. The opposite end of the spectrum from Mastra's integrated approach.