Agent 框架横评 2026 —— CrewAI / LangGraph / Phidata / Agno

Python framework for orchestrating role-playing AI agents that collaborate on complex tasks. Define agents with roles, goals, and tools, then let them work together autonomously. 25,000+ stars.

CrewAI Flows is the event-driven orchestration layer on top of Crews. Decorators @start, @listen, @router build a typed state machine for multi-agent.

Framework for building stateful, multi-actor AI agent applications as directed graphs. Supports cycles, branching, persistence, and human-in-the-loop patterns. By LangChain. 8,000+ stars.

Python framework for building AI agents with built-in memory (PostgreSQL), knowledge bases (RAG), and 50+ tool integrations. Production-ready with monitoring dashboard. 18,000+ GitHub stars.

Agno Reasoning gives any Agent built-in chain-of-thought + tool use. Set reasoning=True; the agent plans, calls tools, returns answers with audit.

Educational multi-agent framework by OpenAI. Ergonomic agent handoffs, tool calling, and context variables. Minimal abstraction over Chat Completions API. 21K+ stars.

Build production-ready AI agents in Python with type-safe structured outputs, dependency injection, and multi-model support. By the creators of Pydantic.