A very simple tampermonkey script to make ChatGPT more UltraWide monitor friendly.

chatgpt-ultrawide.js

// ==UserScript==
// @name         ChatGPT Ultrawide
// @namespace    https://github.com/danwashusen/tampermonkey/chatgpt-ultrawide
// @version      0.1
// @description  Aims to make ChatGPT more UltraWide friendly.
// @author       Dan W
// @match        https://chat.openai.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=openai.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function addStyle(css) {
        const style = document.createElement('style');
        style.type = 'text/css';
        style.appendChild(document.createTextNode(css));
        document.head.appendChild(style);
    }

    const newMediaRule = `
    @media (min-width: 1024px) {
        div.text-base {
            max-width: 92% !important;
        }
    }`;

    addStyle(newMediaRule);
})();