--- layout: default --- # Intercambiabilidad de Modelos
**Ventaja clave de LangChain:** Cambiar de proveedor sin reescribir código
```typescript // OpenAI import { ChatOpenAI } from "@langchain/openai"; const model = new ChatOpenAI({ model: "gpt-4.1-mini" }); ``` ```typescript // Anthropic Claude import { ChatAnthropic } from "@langchain/anthropic"; const model = new ChatAnthropic({ model: "claude-sonnet-4-6" }); ```