ChatSider: GPT & Claude Sidebar Chrome Extension

ChatSider offers quick AI help with writing and translating side by side, covering essays, translations and more from a browser sidebar that stays open for quick questions. It can optimize an article in one click and includes over ten commonly used practical templates. The reviewer finds it best suited to daily writers.

ChatSider supports both ChatGPT and Claude models, including the GPT-4 model from OpenAI. Toolio also lists faster response times for tasks on selected text among its key features. Switching between engines happens from the same sidebar used for writing and translation.

ChatSider is best for content creators, writers and students who want quick AI assistance with daily writing. The reviewer says to skip it for deep analysis or legal documents, and it does not suit specialized analytical needs. It runs on the web.

The reviewer says ChatSider lacks the in-depth analytical capabilities of specialized tools. It does not provide a comprehensive chat history for complex queries, and translation accuracy can be lower for highly technical or nuanced language. Those limits matter most for analytical or specialist work.

Toolio scores ChatSider 4.9 out of 5, scored by Alex after real use on 5 Oct 2026. The reviewer praises its one-click text optimization, built-in templates and always-available sidebar. Alternatives Toolio lists include Sentence Counter, Soexai Chrome Extension, Power Brain AI and Kind Words Online Chrome Extension.