PydanticAI
PydanticAI is a Python Agent Framework that streamlines the development of production-grade AI applications by combining Pydantic's powerful data validation with LLM integration, offering type-safe dependency injection and model-agnostic support.
https://ai.pydantic.dev/
Product Information
Updated:Dec 6, 2024
What is PydanticAI
PydanticAI is an innovative agent framework developed by the team behind Pydantic, designed to simplify the process of building production-grade applications with Generative AI. Currently in early beta, it serves as a bridge between Pydantic's robust data validation capabilities and various LLM models, including OpenAI, Gemini, and Groq. The framework emerged from the need for a more intuitive and reliable way to integrate LLMs into Python applications, particularly when the Pydantic team was developing Pydantic Logfire and found existing solutions lacking.
Key Features of PydanticAI
PydanticAI is a Python Agent Framework designed for building production-grade applications with Generative AI, developed by the team behind Pydantic. It offers model-agnostic support, type-safe validation, structured response handling, and seamless integration with various LLM providers. The framework emphasizes simplicity and reliability while providing robust features like dependency injection, streamed responses, and comprehensive monitoring through Logfire integration.
Type-safe Response Validation: Leverages Pydantic to ensure LLM outputs conform to expected data structures, providing robust validation for production applications
Dependency Injection System: Novel type-safe system that allows customization of agent behavior and facilitates testing and evaluation-driven development
Model Agnostic Architecture: Supports multiple LLM providers (OpenAI, Gemini, Groq) with a simple interface for implementing additional model support
Streamed Response Handling: Capable of processing and validating streamed responses in real-time, including structured data validation during streaming
Use Cases of PydanticAI
Banking Customer Support: Create intelligent support agents that can access customer data, provide tailored advice, and assess security risk levels in real-time
SQL Query Generation: Generate and validate SQL queries based on natural language input with built-in validation through database EXPLAIN queries
Structured Data Extraction: Convert unstructured text inputs into validated, structured data models for downstream processing and analysis
Pros
Built by the experienced team behind Pydantic, ensuring reliability and industry best practices
Strong type safety and validation features for production-grade applications
Flexible integration with multiple LLM providers and existing Python development practices
Cons
Still in early beta with API subject to changes
Limited model support compared to some other frameworks
Requires understanding of Pydantic and type hinting for optimal usage
How to Use PydanticAI
Install PydanticAI: Install using pip: 'pip install pydantic-ai' or for minimal installation use 'pip install pydantic-ai-slim'
Import Required Components: Import the basic components: 'from pydantic_ai import Agent, RunContext' and any other needed Pydantic components
Create an Agent: Initialize an Agent with a model (e.g., 'agent = Agent("openai:gpt-4o")' or 'agent = Agent("gemini-1.5-flash")')
Define Data Models: Create Pydantic models to define the structure of your inputs and outputs using class definitions with type hints
Set Up Dependencies: Define dependencies using @dataclass if your agent needs access to external resources or data during execution
Configure System Prompts: Add system prompts either statically through the agent constructor or dynamically using the @agent.system_prompt decorator
Add Tools: Register tools using @agent.tool decorator to give your agent additional capabilities and functions it can call
Implement Result Validation: Set up result validation using Pydantic models and the result_type parameter in your Agent configuration
Run the Agent: Execute the agent using either run_sync() for synchronous operations or run() for async operations, passing necessary dependencies
Optional: Add Monitoring: Integrate with Pydantic Logfire for monitoring by installing the logfire optional group and configuring logging
PydanticAI FAQs
PydanticAI is a Python Agent Framework designed to build production-grade applications with Generative AI. It's built by the team behind Pydantic and is currently in early beta. It aims to make it less painful to develop AI applications while providing type safety and structured response validation.
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