Hello,
Could you try align your code with code provided in documentation. This should return an object with two keys: [ 'content', 'role' ].
Code is as:
import OpenAI from "openai";
const openai = new OpenAI({
apiKey: "GEMINI_API_KEY",
baseURL: "https://generativelanguage.googleapis.com/v1beta/openai/"
});
const response = await openai.chat.completions.create({
model: "gemini-2.5-flash",
messages: [
{ role: "system", content: "You are a helpful assistant." },
{
role: "user",
content: "Explain to me how AI works",
},
],
});
console.log(response.choices[0].message);