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SearchFree tier
Mainland China: not confirmed
AI search and chat assistant that answers with citations, with free and Pro plans listed publicly.
带引用的 AI 搜索与对话助手，公开列出免费与 Pro 方案。
Marked “not confirmed” because NavBoth only checked public pages and did not verify access from mainland China.
SearchFree tier
Search tool that answers from research papers and shows the academic sources it used.
Mainland China: not confirmed
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Answer engine that searches the web and shows citations beside the reply, with a free tier and a paid Pro plan.
Mainland China: not confirmed
View listingSearchFree tier
Developer-focused answer engine for coding questions, with free use and paid options.
Mainland China: not confirmed
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