| 维度 / 指标 | ![]() | |
|---|---|---|
| 官方域名 | copyleaks.com | perplexity.ai |
| 定价模式 | 付费,定价请咨询 | 免费增值 |
| 月访问量 | 240.25万 (2,402,494) | 8831.02万 (88,310,223) |
| 月度环比流量变化 | -39.44万 (-14.1%) | -339.5万 (-3.7%) |
| 主要市场与份额 | 🇺🇸 美国 (53.2%) | 🇺🇸 美国 (25.5%) |
| 直接访问 / 月 | 75.85万 | 6332.07万 |
| 用户评分 | 4.4 | 4.7 |
| 支持的平台 | 网站 | 网站 |

面向内容完整性的企业级 AI 与抄袭检测
识别 30 多种语言及主流 LLM 的 AI 生成文本,内部英文测试集准确率宣称超过 99%。
检索 60 万亿个网站、16,000 多种开放获取期刊和内部资料库,揪出改写与隐藏复制。
将检测扩展至 AI 生成的视频、音频和图像,让团队能核验文本之外的内容。
可扩展的 API 与工作流集成,自动完成 LMS、出版工具和企业系统中的内容分析。
实时 AI 答案引擎与研究工作室,将联网引用与前沿推理模型相结合。
跨数百个来源执行多步骤迭代式网络与文档研究,交叉核对事实并生成结构化、带引用支持的分析报告,可导出为 PDF 或分享为交互式 Perplexity Pages。
让 Pro 与 Max 订阅者在 Perplexity 自有 Sonar 模型与顶级外部模型(包括 Claude 4、o3-pro 与 Gemini)之间动态切换,或并排比较多模型推理结果。
提供专属项目工作区,用户可上传本地 PDF、表格与文本文件,配置自定义助手指令,并运行结合私有文档检索与实时互联网搜索的查询。
将 Perplexity 从被动的问答扩展到代理式执行,通过 Comet 生态把高层用户请求转化为已完成的工作流、多标签页浏览器操作与自动化数据综合。
ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.

Tencent Yuanbao is Tencent's consumer AI assistant, powered by its Hunyuan family of large models along with DeepSeek options. It combines chat, web-grounded Q&A, document analysis, image understanding and image generation in one place across web, mobile and desktop apps.
Tencent Yuanbao is Tencent's consumer AI assistant, powered by its Hunyuan family of large models along with DeepSeek options. It combines chat, web-grounded Q&A, document analysis, image understanding and image generation in one place across web, mobile and desktop apps.

Z.ai is the free web assistant from Zhipu AI, built on the GLM model family. It handles everyday chat and research, generates slide decks and documents, and can produce working code, web pages and apps from a single prompt, with a no-login guest mode for quick questions.
Z.ai is the free web assistant from Zhipu AI, built on the GLM model family. It handles everyday chat and research, generates slide decks and documents, and can produce working code, web pages and apps from a single prompt, with a no-login guest mode for quick questions.
免费 AI 检测器,给出概率分数与逐句信号

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.