A tool to know your ChatGPT Rate Limit.
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// ==UserScript==
// @name ChatGPT Rate Limit - Frontend
// @namespace http://terase.cn
// @license MIT
// @version 2.5
// @description A tool to know your ChatGPT Rate Limit.
// @author Terrasse
// @match https://chatgpt.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=chatgpt.com
// @sandbox RAW
// @grant none
// ==/UserScript==
(function() {
'use strict';
window.model_status = {
// "o3": -1,
// "o4-mini-high": -1,
// "o4-mini": -1,
// "GPT-4.5": -1,
"GPT-5": -1,
"GPT-5-Thinking": -1,
}
window.devarious = {
// "gpt-4-5": "GPT-4.5",
// "4.5": "GPT-4.5",
"gpt-5": "GPT-5",
"5": "GPT-5",
"gpt-5-thinking": "GPT-5-Thinking",
"5 Thinking": "GPT-5-Thinking",
}
function getCurrentModel() {
var bar = document.getElementById("crl_bar");
var model = bar.previousElementSibling.innerText;
if (model in window.devarious) {
model = window.devarious[model];
}
return model;
}
function updateStatusText() {
var status = window.model_status;
// var text = "";
// for (const model in status) {
// text += `${model}: ${status[model]}; `;
// }
// text = text.slice(0, -2);
var model = getCurrentModel();
var remain = "∞";
if (model in status) {
remain = `${status[model]}`;
}
var text = ` [${remain}]`;
var bar = document.getElementById("crl_bar");
if (bar) {
bar.innerText = text;
}
}
(function(fetch) {
window.fetch = function(input, init) {
var method = 'GET';
var url = '';
var payload = null;
if (typeof input === 'string') {
url = input;
} else if (input instanceof Request) {
url = input.url;
method = input.method || method;
payload = input.body || null;
} else {
console.log(`Unexpected input of type ${typeof input}: ${input}`);
}
if (init) {
method = init.method || method;
payload = init.body || payload;
}
// console.log(`Request: ${method} ${url}`);
if (method.toUpperCase() === 'POST') {
if (url.endsWith("/backend-api/f/conversation")) {
// console.log("Conversation Request");
payload = JSON.parse(payload);
var model = payload.model;
if (model in window.devarious) {
model = window.devarious[model];
}
window.postMessage({ model: model, type: "put" }, window.location.origin);
}
}
return fetch.apply(this, arguments);
};
})(window.fetch);
function receiveMessage(event) { // Accept: type="status"
if (event.origin !== window.location.origin) return;
if (event.data.type !== "status") return;
var msg = event.data;
// console.log('MAIN_WORLD 收到消息:', msg);
var status = window.model_status;
if (msg.model in status) {
status[msg.model] = msg.remain;
updateStatusText();
} else {
console.log(`Unknown model from backend: ${msg.model}, msg: ${msg}, event: ${event}`, event);
}
}
window.addEventListener('message', receiveMessage, false);
function updateAll() {
// console.log("Update All");
for (const model in window.model_status) {
window.postMessage({ model: model, type: "get" }, window.location.origin);
}
}
// Display & Refresh Button
function htmlToNode(html) {
const template = document.createElement('template');
template.innerHTML = html;
return template.content.firstChild;
}
function getModelBarFlexible() {
// there are 2 model bar (responsive), we need the visible one
const model_bars = document.querySelectorAll("button[data-testid='model-switcher-dropdown-button']");
for (const model_bar of model_bars) {
// if (window.getComputedStyle(model_bar).display !== 'none') { // not working
if (model_bar.offsetParent) { // equivalent to visible
return model_bar;
}
}
console.log("No visible model bar found", model_bars);
return null;
}
function addFrontendItems() { // return true if freshly added
var crl_bar = document.getElementById("crl_bar");
if (crl_bar) {
if (crl_bar.offsetParent === null) { // not visible
crl_bar.remove();
return false; // add back next time
}
updateStatusText();
return false;
}
// var avatar = document.querySelector('button[data-testid="profile-button"]');
// if (!avatar) return false;
// var avatarContainer = avatar.parentElement;
var model_bar = getModelBarFlexible();
if (!model_bar) return false;
model_bar = model_bar.querySelector('div');
var displayBar = htmlToNode('<span id="crl_bar" class="text-token-text-tertiary"> [...]</span>')
// var refreshButton = htmlToNode('<button onclick="updateAll();"><svg class="w-6 h-6 text-gray-800 dark:text-white" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="none" viewBox="0 0 24 24"><path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17.651 7.65a7.131 7.131 0 0 0-12.68 3.15M18.001 4v4h-4m-7.652 8.35a7.13 7.13 0 0 0 12.68-3.15M6 20v-4h4"/></svg></button>')
model_bar.append(displayBar);
return true;
}
function tryAddFrontendItems() {
if (addFrontendItems()) {
// console.log("Frontend items added");
updateAll();
}
}
setInterval(updateAll, 60000); // Refresh every 60s
setInterval(tryAddFrontendItems, 200); // Make sure the bar is always there
// ====== Model Switcher ======
var mapping = {
// '1': 'GPT-4.1', // 1
// '3': 'o3', // 3
// '4': 'o4-mini-high', // 4
'5': ['GPT-5', 'GPT-5 Thinking'],
};
function simulateClick(element) {
const ev = new PointerEvent('pointerdown', { bubbles: true });
element.dispatchEvent(ev);
const ev2 = new PointerEvent('pointerup', { bubbles: true });
element.dispatchEvent(ev2);
}
function getModelTargets() {
// document.querySelectorAll("div[role=menuitem]")[0].querySelector("span").textContent
const menuItems = document.querySelectorAll('div[role=menuitem]');
const targets = {};
for (const item of menuItems) {
const span = item.querySelector('span');
if (span) {
targets[span.textContent] = item;
}
}
return targets;
}
function switchModel(target) {
window.switch_state = 'DOING';
// expand the model switcher
const model_bar = getModelBarFlexible();
simulateClick(model_bar);
// try to switch
const do_switch = setInterval(() => {
if (window.switch_state !== 'DOING') {
clearInterval(do_switch);
return;
}
const targets = getModelTargets();
// console.log(`do_switch: ${targets}`);
if (target in targets) {
// simulateClick(targets[target]);
targets[target].click();
console.log(`Switched to ${target}`);
window.switch_state = 'DONE';
clearInterval(do_switch);
}
}, 100);
// try to expand the submenu
const do_expand = setInterval(() => {
if (window.switch_state !== 'DOING') {
clearInterval(do_expand);
return;
}
const submenu = document.querySelector('div[role=menuitem] div.grow');
if (submenu) {
// simulateClick(submenu);
submenu.click();
clearInterval(do_expand);
}
}, 100);
// after 1s, if not done, fail
setTimeout(() => {
if (window.switch_state !== 'DONE') {
console.log(`Failed to switch to ${target}`);
window.switch_state = 'DONE';
}
}, 1000);
}
function decideTarget(key) {
const model = mapping[key];
// if model is a list, toggle along with the list
if (Array.isArray(model)) {
// find the next
const current_model = getCurrentModel();
const index = model.indexOf(current_model);
return model[(index + 1) % model.length];
}
return model;
}
// monitor Ctrl+Shift+number
window.addEventListener('keydown', function(e) {
// console.log(e);
if ((e.ctrlKey || e.metaKey) && e.altKey && e.key in mapping) {
e.preventDefault();
e.stopPropagation();
const target = decideTarget(e.key);
console.log(`Switching to ${target}`);
switchModel(target);
}
});
})();