X.com now loads faster, displays first posts in just 2.7 seconds after a massive overhaul

The website of Elon Musk‘s social media platform, X (formerly Twitter), has been rebuild from the ground up. The new X.com can display its first post in just 2.7 seconds on a slow connection. That compares with nearly 24 seconds on the previous web app, marking a major performance improvement.

X replaces three web servers with a single new application

In its engineering blog post, X explained why it decided to replace its existing web architecture. Previously, the platform relied on three separate servers for regular visitors, search engine crawlers, and link previews.

That setup created additional maintenance work. A change to search descriptions, structured data, or broken-page behavior could require updates across multiple systems.

The new application brings those functions together under one server. It uses React, Vite, Fastify, GraphQL, and TypeScript, among other technologies.

Interestingly, the company says five engineers built the first version in under six months. AI coding agents handled much of the implementation, including converting pages, writing tests, and fixing issues flagged during reviews.

The engineering team still made architectural decisions and reviewed the generated changes. X also says more than 20 people have contributed to the application since late September.

X claims up to 13 times faster loading

In tests conducted internally, X compared the new application against its previous web app using a throttled connection. For signed-in users, profiles and posts appeared eight to thirteen times faster on slower connections. The new version also reduced the amount of JavaScript downloaded before the first post appeared.

However, the Home timeline remains a weaker point. X says it was only 1.7 times faster under the tested slow-network conditions. The rollout is already underway, with signed-in users moving to the new application one country at a time. Logged-out visitors and search crawlers have already moved over. Moreover, X plans to retire the old rweb application once the migration finishes.