聊天模型集成

OPENAI_API_KEY=your-api-key

import { ChatOpenAI } from "@langchain/openai";

const model = new ChatOpenAI({ model: "gpt-5.4-mini" });

await model.invoke("Hello, world!")

ANTHROPIC_API_KEY=your-api-key

import { ChatAnthropic } from "@langchain/anthropic";

const model = new ChatAnthropic({
model: "claude-3-sonnet-20240620",
temperature: 0
});

await model.invoke("Hello, world!")

GOOGLE_API_KEY=your-api-key

import { ChatGoogle } from "@langchain/google";

const model = new ChatGoogle("gemini-2.5-flash");

await model.invoke("Hello, world!")

MISTRAL_API_KEY=your-api-key

import { ChatMistralAI } from "@langchain/mistralai";

const model = new ChatMistralAI({
model: "mistral-large-latest",
temperature: 0
});

await model.invoke("Hello, world!")

FIREWORKS_API_KEY=your-api-key

import { ChatFireworks } from "@langchain/community/chat_models/fireworks";

const model = new ChatFireworks({
model: "accounts/fireworks/models/llama-v3p1-70b-instruct",
temperature: 0
});

await model.invoke("Hello, world!")

GROQ_API_KEY=your-api-key

import { ChatGroq } from "@langchain/groq";

const model = new ChatGroq({
model: "llama-3.3-70b-versatile",
temperature: 0
});

await model.invoke("Hello, world!")