Zhihu Direct Answer

Zhihu Direct Answer leverages Zhihu's vast repository of questions, answers, and articles, along with external academic papers and web sources. Its Deep Thinking mode, powered by the full DeepSeek-R1 model, delivers structured, well-reasoned responses with clear source citations, significantly reducing AI hallucinations, especially in STEM and professional domains. Users can also build a personal Knowledge Base by uploading local files (PDF, Markdown, TXT) or bookmarking Zhihu content, then query and analyze them to create a private research hub. Within Zhihu comments, mentioning @Zhihu Direct Answer enables on-demand summarization of long posts, term explanations, image analysis, and multi-turn conversations without re-tagging. For developers and content creators, Zhihu offers API and MCP Skill access to its hot list, search, and Direct Answer Agent, with 1,000 free calls per day, making it easy to automate topic discovery and content curation. The tool's accuracy is strongly tied to the depth of Zhihu's content; niche or rapidly shifting topics may yield less reliable answers. The Knowledge Base only supports limited file types and upload speeds depend on network conditions.