Part 11

Overview

Understanding theory is one thing. Building systems is another.

This section covers the major frameworks used to build production agentic systems in 2025-2026.

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Framework Comparison

Framework	Strength	Best For
LangGraph	Explicit state management	Complex workflows
CrewAI	Multi-agent coordination	Team agents
AutoGen	Conversation patterns	Back-and-forth
Semantic Kernel	Enterprise integration	Business logic
MCP	Standard tool protocol	Interoperability

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Adoption Trends

2025 Market Share (estimated):

• LangGraph: 35% (growing fastest)
• CrewAI: 25% (production-ready in 2024)
• Custom: 20%
• AutoGen: 15%
• Others: 5%

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Chapter Map

• Langgraph
• Crewai
• Autogen
• Semantic Kernel
• Model Context Protocol

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How to Choose

LangGraph: If you need explicit state management CrewAI: If you're building multi-agent teams AutoGen: If conversation patterns work for your use case Semantic Kernel: If you need enterprise integration MCP: If you need tool standardization

Most production systems use multiple frameworks together.

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Next: Start with Langgraph

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Last Updated: August 9, 2026