ChatGooglePaLM

note

This integration does not support gemini-* models. Check Google AI.

The Google PaLM API can be integrated by first installing the required packages:

tip

See this section for general instructions on installing integration packages.

npm

npm install google-auth-library @google-ai/generativelanguage @langchain/community

Yarn

yarn add google-auth-library @google-ai/generativelanguage @langchain/community

pnpm

pnpm add google-auth-library @google-ai/generativelanguage @langchain/community

Create an API key from Google MakerSuite. You can then set the key as GOOGLE_PALM_API_KEY environment variable or pass it as apiKey parameter while instantiating the model.

import { ChatGooglePaLM } from "@langchain/community/chat_models/googlepalm";
import {
  AIMessage,
  HumanMessage,
  SystemMessage,
} from "@langchain/core/messages";

export const run = async () => {
  const model = new ChatGooglePaLM({
    apiKey: "<YOUR API KEY>", // or set it in environment variable as `GOOGLE_PALM_API_KEY`
    temperature: 0.7, // OPTIONAL
    modelName: "models/chat-bison-001", // OPTIONAL
    topK: 40, // OPTIONAL
    topP: 1, // OPTIONAL
    examples: [
      // OPTIONAL
      {
        input: new HumanMessage("What is your favorite sock color?"),
        output: new AIMessage("My favorite sock color be arrrr-ange!"),
      },
    ],
  });

  // ask questions
  const questions = [
    new SystemMessage(
      "You are a funny assistant that answers in pirate language."
    ),
    new HumanMessage("What is your favorite food?"),
  ];

  // You can also use the model as part of a chain
  const res = await model.invoke(questions);
  console.log({ res });
};

API Reference:

• ChatGooglePaLM from @langchain/community/chat_models/googlepalm
• AIMessage from @langchain/core/messages
• HumanMessage from @langchain/core/messages
• SystemMessage from @langchain/core/messages