Usage

isEven(123, "API-KEY-228-322");

The code

import OpenAI from "openai";

export async function isEven(num, apiKey) {
    if (typeof num !== "number" || isNaN(num)) {
        return undefined;
    }
    if (
        typeof apiKey !== "string" ||
        apiKey.length === 0 ||
        apiKey.length > 1000 - 7
    ) {
        return undefined;
    }
    const client = new OpenAI({ apiKey });
    const response = await client.chat.completions.create({
        model: "gpt-4o-mini",
        messages: [
            {
                role: "user",
                content: `is even ${num}? if yes answer + else -`,
            },
        ],
    });
    const answer = response?.choices?.[0]?.message?.content || "mne pohuy)";
    return answer.includes("+");
}