Generate Text

Open core/generate-text.ts. You should see the following code already:

core/generate-text.ts

import dotenv from "dotenv";

dotenv.config();

async function main() {}
main().catch(console.error);

First, import and call the generateText function.

core/generate-text.ts

import { generateText } from "ai"; 
import dotenv from "dotenv";

dotenv.config();

async function main() {
  const result = await generateText({}); 
}
main().catch(console.error);

Next, specify which model you want to use. First, import the official OpenAI provider from @ai-sdk/openai, and then pass it to the model key.

core/generate-text.ts

import { openai } from "@ai-sdk/openai"; 
import { generateText } from "ai";
import dotenv from "dotenv";

dotenv.config();

async function main() {
  const result = await generateText({
    model: openai("gpt-4o"), 
  });
}
main().catch(console.error);

Note: the OpenAI provider will look for the OPENAI_API_KEY in your .env file by default.

Now, add a prompt.

core/generate-text.ts

import { openai } from "@ai-sdk/openai";
import { generateText } from "ai";
import dotenv from "dotenv";

dotenv.config();

async function main() {
  const result = await generateText({
    model: openai("gpt-4o"),
    prompt: "Tell me a joke.", 
  });
}
main().catch(console.error);

Finally, log out the models response.

core/generate-text.ts

import { openai } from "@ai-sdk/openai";
import { generateText } from "ai";
import dotenv from "dotenv";

dotenv.config();

async function main() {
  const result = await generateText({
    model: openai("gpt-4o"),
    prompt: "Tell me a joke.",
  });
  console.log(result.text); 
}
main().catch(console.error);

Run the script in the terminal, and see what happens.

npx tsx core/generate-text.ts