AI Chat Sync starts from a practical observation: different large language models give noticeably different answers to the same question, and finding the best one means asking everyone. Doing that by hand is tedious - multiple tabs, the same text pasted over and over. This extension automates the chore. With one click it opens a chosen set of AI chat websites, and when you type a question into any one of them, that question is synchronised into the others.
Layout is treated as a first-class feature. You can open the sites as regular tabs, in a new window, or tiled horizontally, vertically or in a grid, which turns your screen into a comparison desk rather than a stack of hidden tabs. You can also batch-start fresh conversations across all of them at once and close the synchronised sessions in one action, either all of them or just specific ones, so cleanup does not become its own task.
It also stays flexible about which services you use. Beyond the predefined AI chat sites, you can add any other web page as a targets and set custom rules, or reuse the matching rules already included for existing chat sites. The extension collects no data and reports 276 users. One caveat worth naming: it drives the websites' normal interfaces rather than official APIs, so if a provider changes its page layout, synchronisation for that site may need an update.
