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SearchFree tier
Mainland China: not confirmed
Google Search API for developers building AI apps, with free credits and pay-as-you-go.
面向构建 AI 应用的开发者的 Google 搜索 API，有免费额度与按量计费。
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
View listingSearchFree tierEditor's pick
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
AI search and chat assistant that answers with citations, with free and Pro plans listed publicly.
Mainland China: not confirmed
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