How to Build AI Agents with PydanticAI (Python Tutorial)

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🛠️ My Development Workflow

⏱️ Timestamps
0:00 Introduction to PydanticAI
1:09 Understanding PydanticAI Framework
3:05 Core Components of PydanticAI
3:27 Practical Code Example: Hello World
9:50 Integrating Dependency Injection
14:38 Tools and Their Applications
22:18 Reflection and Self-Correction
29:07 Evaluating PydanticAI
31:06 Best Practices with Frameworks
33:06 Community and Resources for Developers

📌 Description
In this episode, I explore the newly released Pydantic agent framework, providing a comprehensive overview to evaluate its integration with large language models (LLMs). I highlight its core features, including model agnosticism, type safety, and flexible dependency injection, which enhance application resilience.

By comparing PydanticAI with established libraries like Langchain and Llama Index, I illustrate its advantages. I present practical examples for configuring agents, handling structured outputs, and creating dynamic prompts based on user interactions.

I also discuss the framework’s self-correction mechanisms and share insights on its early beta status, urging developers to experiment with Pydantic AI and combine its strengths with other tools. Finally, I highlight resources from my company, Datalumina, to support developers in building AI applications.

👋🏻 About Me
Hi there! I’m Dave Ebbelaar, founder of Datalumina®, and I’m passionate about helping data professionals and developers like you succeed in the world of data science and AI. If you enjoy the tutorial, make sure to check out the links in this description for more resources to help you grow.

At Datalumina, we help individuals and businesses unlock the full potential of AI and data by turning complexity into capability. Whether you're learning Python, freelancing, or building cutting-edge AI apps, we provide the tools, guidance, and expertise to help you succeed.

[AnthonyAlcerro-vd]

We need a full tutorial on how to do evals 🙏

[IdPreferNot]

Love that you chose to do a video on this. I wouldnt bet against Pydantic and see this a an even better version of Swarm.

[juanantonionavarrojimenez]

The evaluation is perfect. That's the way. Thanks.

[eneskosar]

Very informative Dave, thanks for all the work. You're the best

[rembautimes]

Great video and thanks for sharing. I think having a leaner stack is better because it’s quite easy for a big stack to introduce dependency conflicts. Also Pydantic’s integration with FastAPI is awesome 😂

[jordan-kzrx]

Thank you man, this knowledge is really valuable and presented so well.

[jirivchi]

thanks for all your content! it is very informative and helpful

[silver]

Thanks for your review! What would you recommend to use instead of PydanticAI at the moment (until it's matured)? Just using plain API?

[chefzieher]

Great video! I like that you are using the interactive execution in vscode/cursor. How do you debug that code? (I didn't figure that out yet)

[khandelwalshekhar]

Dave I really want to know your take on phidata ?

[artursradionovs]

Does PydanticAI support local running LLM’s?

[heheeheh]

Hoow is this Agentic Framework comapred to phidata Framework???

[IdPreferNot]

I thought llms loved json structure. Cool markdown utility function but why needed?

[PriyankBolia]

Please use bigger fonts like other channels, sometimes I use a laptop to watch, and its hard to read.