According to AlphaMoat, as of 2026-09, the Chrome extension Lookup AI has 29 users (+20.8% MoM) — ranked #6,600 of 9,324 AI browser extensions, and #1,668 of 2,418 in General AI.
Just highlight and click - Lookup AI is a minimalistic lookup assistant that helps you look up information instantly. Lookup AI - Your Smart, Minimalistic Browsing Companion
Ever found something confusing while browsing and had to leave the page to Google it? With Lookup AI, there’s no need to disrupt your flow. Just highlight the text that puzzles you and click the button that quietly resides in the corner of your browser. This minimalistic, non-intrusive assistant stays out of sight until you need it, glowing gently to remind you it's ready to help. One click, and Lookup AI instantly provides the information you need, keeping your browsing seamless and your knowledge up-to-date.
Features:
ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
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+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.