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Top 8 AI Agent Frameworks Tested: Discover the Best Options for Your Next Project

Agentic Frameworks, AI frameworks, building AI agents, LlamaIndex, multi-agent systems, PydanticAI, Smolagents

In our latest blog post, we discuss the importance of building effective AI agents for complex tasks. While pure Python offers flexibility, agentic frameworks can enhance teamwork and streamline the development process. We evaluated eight popular frameworks for their usability, features, and maturity. Our findings highlight Smolagents as the easiest to use, while LlamaIndex stands out as a battle-tested choice for production. We recommend PydanticAI, Smolagents, and LlamaIndex for creating autonomous AI agents. The right framework depends on your project’s needs and team expertise. If you’re looking for assistance in developing your AI systems, our Data & AI consulting services can help you succeed.



In the fast-evolving landscape of artificial intelligence, building effective AI agents is crucial, especially when they need to work together. Recently, we shared insights on orchestrating multi-agent AI systems. This led us to investigate the best ways to build these specialized AI agents.

While using pure Python offers flexibility, agentic frameworks present unique advantages, especially for larger projects. These frameworks encourage developers to follow a consistent design pattern, which helps reduce complexity and streamline decision-making.

To assist AI practitioners in choosing the right tools, we analyzed eight promising agentic frameworks. This list includes:

– Autogen
– CrewAI
– Langflow
– LangGraph
– LlamaIndex
– n8n
– PydanticAI
– Smolagents

Our approach involved applying each framework to a financial multi-agent assistant workflow, which is essential for evaluating their strengths and weaknesses. Each of these agents plays a unique role, including an orchestrator that decides which agent to use for specific tasks.

For a fair comparison, we focused on three main criteria:

1. Developer experience: How easy it is to use the framework.
2. Features: The ability to customize the agents effectively.
3. Maturity: How well-established the framework is for production use.

Our findings showed that Smolagents stood out for its user-friendliness, making it almost as simple as writing in pure Python. In contrast, frameworks like Autogen and LangGraph required more complex thinking and coding.

We recommend PydanticAI, Smolagents, and LlamaIndex as the top choices for building AI agents. While LlamaIndex is ideal for production-ready applications, the newer frameworks like PydanticAI and Smolagents are also worth consideration as they continue to develop.

If you’re looking to create effective agentic AI systems, we are here to help. Our expertise covers various aspects of AI strategy and development. Explore our services and let’s innovate together.

Tags: AI frameworks, building AI agents, multi-agent systems, Smolagents, LlamaIndex

What are AI agent frameworks?
AI agent frameworks are tools or platforms that help developers create software programs that can perform tasks autonomously. They allow machines to act and interact with their environment, making decisions based on the data they collect.

Why did you test eight AI agent frameworks?
We tested eight AI agent frameworks to compare their features, ease of use, and performance. This helps developers choose the right one for their needs and makes it easier for them to build intelligent systems.

What are the key features to look for in an AI agent framework?
When choosing an AI agent framework, consider features like flexibility, scalability, ease of integration, community support, and available documentation. These aspects can greatly affect your development experience and the effectiveness of your AI agent.

Did you find a best overall AI agent framework?
Yes, based on our testing, we found that one framework stands out for its user-friendly design and strong performance. However, the best choice depends on your specific project requirements and goals.

Are AI agent frameworks suitable for beginners?
Yes, many AI agent frameworks are designed to be beginner-friendly and come with tutorials or guides. However, some may require a little programming knowledge. It’s good to start with simpler frameworks to build confidence before tackling more complex ones.

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