Perplexity
AI 驱动的搜索引擎。结合大语言模型和实时网络检索，提供带完整来源引用的答案。支持多模型切换（默认 Sonar、GPT-5、Claude、Gemini）、深度研究、Pro Search、文件上传分析和知识库管理。是传统搜索引擎的 AI 替代方案。
AI-powered search engine combining LLMs with real-time web retrieval to provide answers with full source citations. Supports multi-model switching (default Sonar, GPT-5, Claude, Gemini), Deep Research, Pro Search, file analysis, and knowledge base management. An AI-native alternative to traditional search engines.
🧠 可用模型Available Models
| 模型 | Model | 类型 | Type | 特点 | Highlights |
|---|---|---|---|---|---|
| Sonar HOT | 默认模型 | Perplexity 自研搜索优化模型，速度快，引用准确 | |||
| GPT-5 | 可选 | OpenAI 旗舰，深度推理和搜索结合 | |||
| Claude Opus 4.8 | 可选 | 长文档分析和搜索，200K上下文 | |||
| Gemini 3.0 Pro | 可选 | 1M 上下文搜索，大范围信息整合 | |||
| Deep Research NEW | Agent | 多步自主搜索代理，综合大量来源生成深度报告 | |||
| Sonar HOT | Default | Perplexity's search-optimized model, fast with accurate citations | |||
| GPT-5 | Optional | OpenAI flagship for deep reasoning + search | |||
| Claude Opus 4.8 | Optional | Long document analysis + search, 200K context | |||
| Gemini 3.0 Pro | Optional | 1M context search, broad info synthesis | |||
| Deep Research NEW | Agent | Multi-step autonomous search agent, synthesizes deep reports |
💰 价格方案Pricing Plans
Free
- 无限制 Quick Search
- 5 次 Pro Search/天
- 基础模型（Sonar）
Pro
- 无限制 Pro Search
- 500+ Deep Research/月
- 全部模型切换
- 文件上传分析
- 自定义知识库
Enterprise
- Pro 全部功能
- SSO / 管理控制台
- 无限文件上传
- 使用统计面板
🎯 适用场景Use Cases
🔍 实时搜索Real-time Search
获取最新信息，每条答案附带完整来源链接
Get the latest info with full source links for every answer
📝 学术调研Academic Research
Deep Research 自动整合多篇论文、报告和数据
Deep Research auto-synthesizes across papers, reports, and data
📄 文档分析Document Analysis
上传PDF/文档，结合联网搜索进行深入分析
Upload PDFs/docs, combine with web search for deep analysis
🏢 商业情报Business Intelligence
竞品研究、行业趋势、市场分析，来源可追溯
Competitor research, industry trends, market analysis with traceable sources
🔗 相关工具Related Tools
❓ FAQ
Perplexity 能替代 Google 吗？
对于信息查找、研究和分析类问题，Perplexity 体验更好（直接答案 + 来源）。对于导航搜索（找特定网站），传统搜索引擎更合适。两者互补。
Pro 版的 Deep Research 功能值得吗？
如果你需要定期做深度调研（学术、投资、市场分析），Deep Research 可以节省数小时手动搜索整理的时间，强烈推荐 Pro 版。
Can Perplexity replace Google?
For information lookup, research, and analysis, Perplexity offers a better experience (direct answers + sources). For navigational searches (finding specific websites), traditional search engines still win. They complement each other.
Is Pro's Deep Research worth it?
If you regularly do deep research (academic, investment, market analysis), Deep Research saves hours of manual searching and organizing — Pro is highly recommended.