Connect to an LLM

In src/modules/llm.ts, create an instance of the ChatOpenAI exported from @langchain/openai, using the OPENAI_API_KEY environment variable set in .env.local.
The test in src/modules/llm.test.ts imports this variable and calls the invoke method. Try experimenting with the prompt.

View Solution

typescript

src/modules/llm.ts

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

export const llm = new ChatOpenAI({
  openAIApiKey: process.env.OPENAI_API_KEY,
  modelName: "gpt-4o",
  temperature: 0,
});

To verify this challenge, run the following test:

Run Test

npm run test llm

If all tests pass, hit the button below to continue. If anything goes wrong, shout!

Summary

Good job, you’re ready for the next challenge.

GenAI Workshop - TypeScript

Project Setup

What is Neo4j?

Writing Data to Neo4j

Building LLM Applications

Congratulations!

Connect to an LLM

Summary

Chatbot