[ChatGroq](https://js.langchain.com/docs/integrations/chat/groq/): LLM should read this page when needing to implement Groq's chat models in LangChain, when setting up API connections to Groq, or when configuring specific features like JSON mode or tool calling. (This page provides comprehensive documentation for integrating ChatGroq with LangChain JS/TS, including installation instructions, authentication setup, model instantiation, basic invocation patterns, JSON response formatting, chaining with prompts, and supported model features like tool calling and structured output.)

