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Installation

Pydantic AI is available on PyPI as pydantic-ai so installation is as simple as:

pip install pydantic-ai

uv add pydantic-ai

(Requires Python 3.10+)

This installs the pydantic_ai package, core dependencies, and libraries required to use all the models included in Pydantic AI. If you want to install only those dependencies required to use a specific model, you can install the "slim" version of Pydantic AI.

Use with Pydantic Logfire

Pydantic AI has an excellent (but completely optional) integration with Pydantic Logfire to help you view and understand agent runs.

Logfire comes included with pydantic-ai (but not the "slim" version), so you can typically start using it immediately by following the Logfire setup docs.

Running Examples

We distribute the pydantic_ai_examples directory as a separate PyPI package (pydantic-ai-examples) to make examples extremely easy to customize and run.

To install examples, use the examples optional group:

pip install "pydantic-ai[examples]"

uv add "pydantic-ai[examples]"

To run the examples, follow instructions in the examples docs.

Slim Install

If you know which model you're going to use and want to avoid installing superfluous packages, you can use the pydantic-ai-slim package. For example, if you're using just OpenAIChatModel, you would run:

pip install "pydantic-ai-slim[openai]"

uv add "pydantic-ai-slim[openai]"

pydantic-ai-slim has the following optional groups:

You can also install dependencies for multiple models and use cases, for example:

pip install "pydantic-ai-slim[openai,google,logfire]"

uv add "pydantic-ai-slim[openai,google,logfire]"