AI Agent Frameworks, Compared
Side-by-side comparison of 15 AI agent frameworks. Filter by use case (RAG, multi-agent, structured output) and language (Python, TypeScript, .NET). Data last reviewed 2026-11-08.
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LangGraph
Balance agent control with agency
CrewAI
The Enterprise Agent Build & Runtime for the work your business runs on
AutoGen
A framework for building AI agents and applications
Pydantic AI
How Python does AI. The Python AI SDK: a typed, extensible agent loop with every model a string swap away.
OpenAI Agents SDK
A lightweight, powerful framework for multi-agent workflows
Mastra
Ship AI agents that reason, remember, and act in TypeScript.
AI SDK
The TypeScript toolkit for building AI applications and agents.
LangChain
The open agent platform to own your intelligence
LlamaIndex
Turn Any Document Into AI-Ready Context
Haystack
Open-Source AI Orchestration for Production-Grade Agents
Dify
The Platform for Production-Ready Agentic Workflows
Flowise
Build AI Agents, Visually
n8n
The platform for agents and workflows you can follow
Semantic Kernel
Learn to build robust, future-proof AI solutions that evolve with technological advancements.
smolagents
a barebones library for agents that think in code