The Best AI Agent Frameworks (2026)
Compare six open-source AI agent frameworks by language, workflow control, tools, and use case, including Mastra, LangGraph, CrewAI, and Pydantic AI.
5 stories
Compare six open-source AI agent frameworks by language, workflow control, tools, and use case, including Mastra, LangGraph, CrewAI, and Pydantic AI.
If you give an LLM access to your code, you write tools. A tool is a function plus what a model needs to call it: a name, a description, and a schema for the arguments. Then you write the same tools again. The first version uses the AI SDK's tool().
One package gives Mastra agents a single database for conversations, workflow state, observability and vectors, plus managed memory that extracts and semantically recalls facts.
Over the past year, the applied AI market has put an increasing emphasis on delivering tangible value and has seen a significant rise in compelling ... The post Introducing the 2026 Intelligent Applications 40 appeared first on Madrona.
A step by step tutorial: install @tabstack/mastra, spread the tools into an Agent, and give it schema-enforced extraction, research, and browser automation.
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