2026年 OpenAI Agents SDK、Google ADK 与 LangGraph 的终极框架对决

In 2026, the competition among AI agent frameworks intensifies with OpenAI Agents SDK, Google ADK, and LangGraph each representing different approaches to building autonomous AI systems. Six months ago, developers primarily had two options for building agents: use LangGraph for serious production work or manually wire API calls. This landscape has changed dramatically as OpenAI shipped a comprehensive agent framework, Google released ADK with deep integration into Vertex AI, and LangGraph reached version 1.0 GA, solidifying its graph-based approach as production-ready. While each framework claims to be 'the easiest' and 'the most production-ready,' what developers truly need is a clear comparison and practical guidance.