Pydantic AI
BuildersAgent frameworkPydantic
Python agent framework built by the Pydantic team with type-safe outputs.
- Who it's for: people building software and AI agents
- Pricing: Free, open source (verify on the official site)
- Official site: https://ai.pydantic.dev
- Source / changelog: https://ai.pydantic.dev
Playbooks using Pydantic AI
Pydantic AI alternatives
- OpenAI Agents SDK: Lightweight framework for building multi-agent workflows with tools, handoffs and tracing.
- LangGraph: Library for building stateful, long-running agents as graphs, with persistence and human-in-the-loop.
- CrewAI: Python framework for orchestrating role-based teams of agents.
- LangChain: Open-source framework for building LLM apps and agents with integrations.
- LlamaIndex: Framework for building agents and RAG apps over your data; LlamaCloud for parsing.
- AutoGen: Open-source framework from Microsoft for multi-agent applications.
Recent changes
Weekly updates for Pydantic AI will be logged here as they appear in issues.