Quark
夸克
Quark (夸克) is Alibaba's AI assistant product under its Intelligent Information business group — originally a clean, ad-light search box and browser that grew into an all-in-one AI app with AI search, writing, PPT, and document-summary tools, plus a PC client meant to turn an ordinary computer into an "AI computer" . What distinguishes it, per 葬AI's coverage, is a bottom-up product path: rather than building model capability first and hunting for scenarios (the ChatGPT/Doubao logic), Quark spent years accumulating user-tested utilities — scanner, cloud drive, photo album, format conversion — and is now using a customized post-trained Qwen3 model to string those tools together agentically, with its search box acting as a "main Agent" dispatching vertical sub-agents . Its health vertical is the clearest case: a model post-trained on data capturing doctors' full reasoning chains, backed by a graded evidence-based medical knowledge base, which in mid-2025 passed written chief-physician exams across 12 core disciplines; Quark says 20 million users search health questions on it monthly .
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Coverage
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