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头对头基准测试
Letty vs Sider
Letty 记录了 198 月访问量，月度环比增长为 -85.4%，定价为免费增值。Sider 记录了 2,644,740 月访问量，增长率为 -10.6%，定价为免费增值。
Letty 记录了 198 月访问量，月度环比增长为 -85.4%，定价为免费增值。Sider 记录了 2,644,740 月访问量，增长率为 -10.6%，定价为免费增值。
| 维度 / 指标 | ||
|---|---|---|
| 官方域名 | useletty.com | sider.ai |
| 定价模式 | 免费增值 | 免费增值 |
| 月访问量 | 198 (198) | 264.47万 (2,644,740) |
| 月度环比流量变化 | -1162 (-85.4%) | -31.42万 (-10.6%) |
| 主要市场与份额 | 🇮🇳 印度 (100%) | 🇺🇸 美国 (13.3%) |
| 直接访问 / 月 | 77 | 169.95万 |
| 用户评分 | 3.8 | 4.5 |
| 支持的平台 | 网站 | 网站 |
AI 邮件写作与智能回复，就在 Gmail 里
Letty 会读取来信线程并提出契合对话的回复建议，让你无需逐封从头撰写就能清空收件箱。
把粗略想法变成完整邮件。Letty 可起草商务提案、跟进、自我介绍与日常往来邮件。
上传文档、常见问题或网址，Letty 会基于这些资料在回复中准确作答。
Letty 能模仿你的语气与用词，让发件更像你本人，而不是模板腔。
面向阅读、写作与研究 的 AI 侧边栏和浏览器代理
常驻面板可读取当前页面，并用 GPT、Claude 或 Gemini 继续追问，无需把内容复制到另一个标签页。
总结长文章、PDF 和 YouTube 视频，提取要点，并针对原始材料提出具体问题。
翻译网页、PDF 和图片，可对照双语结果，并支持把内容朗读出来便于移动中查看。
利用你已登录的会话，把比价、填表、跨站调研和收件箱整理等多步任务交给代理完成。
通过浏览器扩展提供流畅的行内写作与网页摘要，但自定义侧边栏工具较少。
通过浏览器扩展提供流畅的行内写作与网页摘要，但自定义侧边栏工具较少。
WriteMail.ai is an AI email writing assistant that turns a few rough key points into a polished, correctly toned email. It handles new messages as well as replies, supports dozens of languages, and offers tone, length and style controls plus a Chrome extension and desktop apps for getting drafts out of the browser faster.
WriteMail.ai is an AI email writing assistant that turns a few rough key points into a polished, correctly toned email. It handles new messages as well as replies, supports dozens of languages, and offers tone, length and style controls plus a Chrome extension and desktop apps for getting drafts out of the browser faster.
直接在收件箱中撰写、摘要与润色邮件的 AI 助手
Mochii is a browser extension and web app that puts multiple leading AI models — OpenAI, Claude, and Gemini — into a single sidebar, so you can chat, read, research, and build chatbots without jumping between tabs. It also lets you create custom AI characters, manage a personal knowledge base, and analyze PDFs, images, and webpages.
Mochii is a browser extension and web app that puts multiple leading AI models — OpenAI, Claude, and Gemini — into a single sidebar, so you can chat, read, research, and build chatbots without jumping between tabs. It also lets you create custom AI characters, manage a personal knowledge base, and analyze PDFs, images, and webpages.
