What is Pydantic AI?

Pydantic AI is a Python agent framework for building production-grade applications with generative AI. It is built by the team behind Pydantic Validation and integrates with Pydantic Logfire for real-time debugging, performance monitoring, and behavior tracking. It supports dependency injection, structured responses, streamed responses, and Pydantic Graph for complex workflows. It is model-agnostic, with support for OpenAI, Anthropic, Gemini, Groq, Mistral, Cohere, Bedrock, Hugging Face, and others.

How to use

Install with pip install pydantic-ai → create an Agent with model and system prompt → optionally add tools, dependencies, or structured output types → run synchronously or asynchronously → stream responses or events → integrate with Pydantic Logfire for monitoring.

Key Features

Model-Agnostic

Works with multiple LLM providers.

Pydantic Logfire

Debugging and monitoring integration.

Dependency Injection

Provide data and services to agents.

Structured Responses

Validated and consistent outputs.

Fallback Model

Use another model if one fails.

Pricing Plans

Free

Open source
Requires Python 3.9+

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Pydantic AI