pydantic.dev · Agent Frameworks
Agent framework from the Pydantic team that brings type safety and structured outputs to LLM apps.
Pydantic AI is one of 18 agent framework tools on Drydock. See all agent framework tools or how we check facts.
// guides
LangChain vs CrewAI compared with tested code: one agent loop with middleware vs a crew of role based agents. Models, MCP, pricing and using both together.
What is the most popular AI agent framework in 2026? LangChain leads developer surveys, PyPI downloads and GitHub stars. Here are the numbers and what they hide.
How to build an AI agent from scratch in Python: a tool loop, safe file tools, approvals, a step cap and memory in about 125 lines, on OpenAI or Ollama.
Find the best AI agent framework for Python in 2026. LangGraph, CrewAI, Agno, smolagents, and Pydantic AI compared, with clear picks by use case and tradeoffs.
LangGraph vs CrewAI vs OpenAI Agents SDK compared on control flow, state, human in the loop, model support and learning curve, plus what replaced AutoGen.
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CrewAIcrewai.comPython framework for orchestrating role playing teams of agents that collaborate on tasks, plus an enterprise platform.Agent FrameworksOpen source★ 60.2k
smolagentshuggingface.coHugging Face's minimal library for agents that think in code, working with any model.Agent FrameworksOpen source★ 30.1k
Semantic Kernellearn.microsoft.comMicrosoft's model agnostic SDK for integrating LLMs and agents into C#, Python and Java applications.Agent FrameworksOpen source★ 28.7k
LlamaIndexllamaindex.aiFramework for building agents over your data, strong on ingestion, indexing, retrieval and document workflows.Agent FrameworksOpen source★ 52.7k