PydanticAI

PydanticAI

Pydantic
+
+

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About

AG-UI is an open, lightweight, event-based protocol that standardizes how AI agents connect to user-facing applications. Built for simplicity and flexibility, it enables seamless integration between AI agents, real-time user context, and user interfaces. AG-UI is designed for agent-human interaction: during agent executions, backends emit events compatible with standard AG-UI event types, and agent backends can accept simple AG-UI-compatible inputs as arguments. It works with any event transport, including SSE, WebSockets, webhooks, and other streaming systems, while providing a flexible middleware layer that ensures compatibility across diverse environments. AG-UI brings agents into user-facing applications and complements the wider agentic protocol stack: MCP gives agents tools, A2A allows agents to communicate with other agents, and AG-UI connects agents directly to the user interface.

About

PydanticAI is a Python-based agent framework designed to simplify the development of production-grade applications using generative AI. Built by the team behind Pydantic, the framework integrates seamlessly with popular AI models such as OpenAI, Anthropic, Gemini, and others. It offers type-safe design, real-time debugging, and performance monitoring through Pydantic Logfire. PydanticAI also provides structured responses by leveraging Pydantic to validate model outputs, ensuring consistency. The framework includes a dependency injection system to support iterative development and testing, as well as the ability to stream LLM outputs for rapid validation. It is ideal for AI-driven projects that require flexible and efficient agent composition using standard Python best practices. We built PydanticAI with one simple aim: to bring that FastAPI feeling to GenAI app development.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

AI product developers building interactive agent-powered applications that need structured streaming, tool calls, shared state, and human-in-the-loop control

Audience

Python developers in search of a solution to build AI-powered applications

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

AG-UI
United States
ag-ui.com

Company Information

Pydantic
United States
ai.pydantic.dev/

Alternatives

Alternatives

Okyline

Okyline

Akwatype
TF-Agents

TF-Agents

Tensorflow

Categories

Agentic AI Supported
UX Supported

Categories

Agentic AI Supported
AI Agent Builders Supported

Integrations

Agent Development Kit (ADK) Supported
Codeflash Not Supported
CrewAI Supported
Dock Not Supported
Gemini Not Supported
Gemini 2.0 Not Supported
Gemini 2.0 Flash Not Supported
Gemini Enterprise Not Supported
Gemini Pro Not Supported
Google AI Plus Not Supported
Hindsight Not Supported
LangGraph Supported
LangMem Not Supported
LlamaIndex Supported
Model Context Protocol (MCP) Supported
OpenAI Not Supported
Openlayer Not Supported
Prefactor Not Supported
PydanticAI Supported
telemetry.dev Not Supported

Integrations

Agent Development Kit (ADK) Not Supported
Codeflash Supported
CrewAI Not Supported
Dock Supported
Gemini Supported
Gemini 2.0 Supported
Gemini 2.0 Flash Supported
Gemini Enterprise Supported
Gemini Pro Supported
Google AI Plus Supported
Hindsight Supported
LangGraph Not Supported
LangMem Supported
LlamaIndex Not Supported
Model Context Protocol (MCP) Not Supported
OpenAI Supported
Openlayer Supported
Prefactor Supported
PydanticAI Not Supported
telemetry.dev Supported
Claim AG-UI and update features and information
Claim AG-UI and update features and information
Claim PydanticAI and update features and information
Claim PydanticAI and update features and information