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正面對決基準比較
Paperguide vs Three Sigma
Paperguide 每月有 371,972 次造訪，月增率 -2.9%，定價模式為免費增值。Three Sigma 每月有 416 次造訪，成長率 -79.2%，定價模式為免費試用、付費。
Paperguide 每月有 371,972 次造訪，月增率 -2.9%，定價模式為免費增值。Three Sigma 每月有 416 次造訪，成長率 -79.2%，定價模式為免費試用、付費。
Three Sigma is an AI research assistant built for documents. It searches across whole folders of files, answers your questions with full transparency into how it reached each answer, and offers a free solo mode if you just want to chat.
| 面向／指標 | ||
|---|---|---|
| 官方網域 | paperguide.ai | threesigma.ai |
| 定價模式 | 免費增值 | 免費試用、付費 |
| 每月造訪次數 | 37.2萬 (371,972) | 416 (416) |
| 月流量變化量 | -1.1萬 (-2.9%) | -1580 (-79.2%) |
| 主要市場與市佔 | 🇺🇸 美國 (25.6%) | 🇺🇸 美國 (100%) |
| 每月直接造訪 | 12.16萬 | 163 |
| 使用者評分 | 4.4 | 4.3 |
| 支援平台 | 網站 | 網站 |
為文獻回顧與可稽核系統性回顧打造的 AI 原生研究工作台
以自然語言提出研究問題，從 PubMed、arXiv、OpenAlex、Semantic Scholar 取得綜合答案，每項結論都連結到來源論文。
依 PRISMA 流程進行回顧：預先定義協議、記錄篩選決定、雙人獨立評閱與衝突解決，並依真實計數生成 PRISMA 流程圖。
從 Zotero 或 Mendeley 匯入、依 DOI 加入文獻，自動抓取中介資料與開放取用 PDF，註記與筆記可貫穿其他流程。
自訂萃取欄位，由 AI 批次填入多篇論文，每個數值都能回溯原文語句，並可匯出 CSV 或 Excel。
Three Sigma is an AI research assistant built for documents. It searches across whole folders of files, answers your questions with full transparency into how it reached each answer, and offers a free solo mode if you just want to chat.
Point the tool at a folder of files and ask questions across the whole set at once, rather than opening documents one by one.
Whenever it answers, Three Sigma shows you how it reached the answer, so results are verifiable rather than a black box.
Access Three Sigma through a plugin from within an existing ChatGPT account on every plan.
No document on hand? A free solo mode works like a normal chat assistant.
Semantic Scholar is a free, non-commercial academic search engine built by the Allen Institute for AI (Ai2). It indexes more than 240 million papers from every field of science and uses machine learning to extract meaning from abstracts, citations, figures and tables, so researchers find relevant work faster than with keyword-only search.
Semantic Scholar is a free, non-commercial academic search engine built by the Allen Institute for AI (Ai2). It indexes more than 240 million papers from every field of science and uses machine learning to extract meaning from abstracts, citations, figures and tables, so researchers find relevant work faster than with keyword-only search.
提供更強大的 AI 學術寫作與自動完成輔助，但針對系統化文獻對應的完整度稍低。
免費 / 開源Free visual research discovery and literature mapping tool, but offers less automated evidence synthesis and writing.
免費 / 開源Free visual research discovery and literature mapping tool, but offers less automated evidence synthesis and writing.
專項更強Unmatched visual literature discovery and graph mapping, but lacks document drafting and reference management features.
專項更強Unmatched visual literature discovery and graph mapping, but lacks document drafting and reference management features.
