Calcular gasto com API do ChatGPT

gasto.js

let inputTokens1M = 0.150;
let outputTokens1M = 0.6;
let messageTokens = 30;
let messagesInChat = 5;
let chatsInDay = 50;
let daysInMonth = 30;
let USDtoBRL = 6;

const inputTokenPrice = inputTokens1M / 1000000;
const outputTokenPrice = outputTokens1M / 1000000;

let price = 0;
price += outputTokenPrice * messageTokens * (messagesInChat / 2) * chatsInDay * daysInMonth;

let inputPrice = 0;
for (let i=0; i<messagesInChat; i++) {
	const contextMessages = i *2+1;
    inputPrice += inputTokenPrice * messageTokens * contextMessages;
}
price += inputPrice * chatsInDay * daysInMonth;
price *= USDtoBRL;

console.log(price.toFixed(2));