專項更強Anthropic 的前沿 AI 工作空間,由 Claude 5.5 驅動,擅長代理式程式開發、分析與細膩寫作。
ChatPDF 每月有 1,044,477 次造訪,月增率 -3.7%,定價模式為免費增值。Speak 每月有 46,150 次造訪,成長率 -66.2%,定價模式為免費試用。

Speak is an AI-powered language learning app built around speaking rather than studying. Its Speak Method loops through three stages — learn the phrases native speakers actually use, practice them until they become automatic, and apply them in real conversation with the AI Speak Tutor, which returns immediate feedback on your pronunciation and phrasing. The curriculum is created by language education experts and personalized by AI, with lessons matched to your level.
| 面向/指標 | ![]() | |
|---|---|---|
| 官方網域 | chatpdf.com | usespeak.com |
| 定價模式 | 免費增值 | 免費試用 |
| 每月造訪次數 | 104.45萬 (1,044,477) | 4.62萬 (46,150) |
| 月流量變化量 | -4.05萬 (-3.7%) | -9.04萬 (-66.2%) |
| 主要市場與市佔 | 🇺🇸 美國 (9.6%) | 🇰🇷 南韓 (25.6%) |
| 每月直接造訪 | 45.78萬 | 1.45萬 |
| 使用者評分 | 4.2 | 4.6 |
| 支援平台 | 網站 | 網站 |
與任何 PDF、影片或網頁對話,幾秒內取得附引用的答案
每則回答都錨定來源文件,附可點擊引用並自動捲動至特定段落,核對只要幾秒,不必逐頁翻找。
將文件歸入資料夾,在同一個對話中查詢多個檔案,方便比較論點、交互核對結論或一次複習整門課程。
把冗長的論文、報告與合約濃縮成重點,也支援以任何語言翻譯或提問——甚至可用一種語言上傳、另一種語言提問。
依素材自動產生單字卡與簡報,並使用內建 AI 寫作與 AI 偵測功能來起草與檢查學術文本。

Speak is an AI-powered language learning app built around speaking rather than studying. Its Speak Method loops through three stages — learn the phrases native speakers actually use, practice them until they become automatic, and apply them in real conversation with the AI Speak Tutor, which returns immediate feedback on your pronunciation and phrasing. The curriculum is created by language education experts and personalized by AI, with lessons matched to your level.
The Speak Tutor holds a real back-and-forth conversation with you in the target language and gives feedback on what actually matters, as many times as you want.
Speak flags pronunciation and phrasing problems as you speak, so you can correct habits before they set in.
Every lesson is built around the phrases and patterns native speakers use in real situations, avoiding textbook sentences and grammar drills.
The app adapts lesson order and content to your level and goals, with Premium Plus adding Made for You lessons and review built from your own mistakes.
專項更強Anthropic 的前沿 AI 工作空間,由 Claude 5.5 驅動,擅長代理式程式開發、分析與細膩寫作。
免費 / 開源Completely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms.
跨裝置的免費 AI PDF 編輯、轉換與閱讀工具

Combines full desktop PDF editing software with AI chat, but requires software installation for full features.
用擬真 AI 與專業真人外師,從第一天就開口說外語
與 AI 導師進行真實英語對話,並獲得即時回饋
像學母語一樣學語言:先模仿,再開口。
具備強大的多格式文件聊天與填表功能,但介面感覺稍微凌亂了一點。