🔍AI Search

Perplexity

Freemium

An AI-native next-generation search engine dubbed the "Google killer." Perplexity combines the semantic understanding of large language models with real-time search to deliver structured answers with cited sources directly — rather than traditional link lists — fundamentally changing how people access information. Core features include AI semantic search (generating answers with cited references), Pro Search for deep search (multi-step reasoning and comprehensive analysis), Collections for knowledge organization, Focus for scoped search (academic, video, social, writing, etc.), file upload analysis, multilingual support, and Perplexity Pages (AI-generated shareable article pages). Suitable for academic research, market research, fact-checking, technical troubleshooting, news understanding, product comparison, and other scenarios requiring accurate and comprehensive information. Can replace most traditional search engine usage in daily information gathering. Ideal for researchers, students, journalists, product managers, engineers, investors, and anyone needing high-quality information. For users tired of traditional search engine ads and low-quality SEO content, Perplexity is a revolutionary alternative. Cited, structured answers are its core competitive strength, with information credibility and traceability far exceeding traditional AI chat. It is reshaping user habits in the search industry and defining the search engine of the AI era.

You.com

Freemium

A privacy-focused AI search engine that doesn't track user behavior or build personal data profiles. You.com also offers multi-model AI switching, allowing users to select the most suitable model for each task, combining search and AI capabilities for information retrieval and content creation. Core features include AI semantic search (direct answers with citations), multi-model selection (freely switch between GPT-4o, Claude, Gemini, etc.), privacy protection (no tracking, no recording), YouAgent autonomous search agent, YouWrite AI writing, code search, and image and video search. Suitable for privacy-conscious users' daily searches, developer technical searches, content creator writing assistance, academic research, and more. An ideal choice for users who value privacy while enjoying AI convenience. Ideal for privacy-conscious users, developers, researchers, and professionals who value data security. Particularly popular among users in Europe and regions with strict privacy regulations. Privacy protection and flexible multi-model selection are You.com's differentiating advantages. Its distinctive privacy policy among AI search tools makes it the preferred search engine for privacy-first users.

Phind

Free

An AI search engine designed for developers and technical professionals, excelling at technical Q&A, code search, and programming problem-solving. Phind is deeply optimized for programming and technical search needs, with answer quality highly regarded in the tech community. Core features include technical AI search (with code examples and citations), multi-step reasoning search, code generation and debugging, switching between mainstream AI models (Phind's own model plus Claude, GPT, etc.), intelligent technical documentation retrieval, and full programming language coverage. Suitable for programming problem troubleshooting, technical solution research, code example searches, framework and library usage queries, bug fix solution searches, technical learning, and other daily developer scenarios. Ideal for software developers, DevOps engineers, data scientists, technical writers, computer science students, and other technical professionals. A powerful search tool for anyone engaged in programming and technical work. Deep optimization for the technical domain makes its programming and technical search quality surpass general AI search tools. Developer community reputation and recognition have established Phind's benchmark status in the technical search space.

Devv

Free

A Chinese developer AI search engine focused on programming and technical content retrieval and answers. Devv is locally optimized for Chinese developers' usage habits and tech ecosystem, with unique advantages in Chinese technical Q&A and domestic tech stack searches. Core features include AI semantic search (with code and Chinese technical documentation citations), GitHub mode (searching open-source projects and code), multi-model support, Chinese tech blog and community content retrieval, code generation and explanation, and technical Q&A. Suitable for Chinese developers' daily technical troubleshooting, domestic tech stack selection, Chinese technical documentation retrieval, programming learning, open-source project searching, and other traditional Chinese developer scenarios. Ideal for Chinese-speaking developers and tech enthusiasts. Particularly convenient for users more comfortable conducting technical searches in Chinese and needing to search domestic tech community content. Focus on the Chinese developer ecosystem is Devv's core differentiating advantage. Its retrieval effectiveness for domestic tech stacks (such as Vue, Mini Programs, Java Spring, etc.) and Chinese technical documentation surpasses general AI search tools.

Kunlun Tech's AI search engine, supporting multimodal search and deep analysis, and a significant player in China's AI search space. Tiangong AI Search comprehensively applies large model semantic understanding and reasoning capabilities to search scenarios — not only finding information but also analyzing and synthesizing it. Core features include AI semantic search (direct answers with citations), multimodal search (supporting image search and recognition), deep research mode (generating comprehensive analysis reports), mind map and information graph visualization, academic search, and multilingual translation search. Suitable for daily information queries, academic research, market analysis, in-depth news understanding, image searching, and more. Particularly well-suited for Chinese users needing deep information analysis and synthesis. Ideal for domestic users, students, researchers, media professionals, and business analysts. An excellent choice for users wanting AI to directly deliver analytical conclusions rather than just information links. Multimodal search and deep analysis capabilities are Tiangong AI's core strengths. As an independent AI search solution in the domestic search market, it provides users with an innovative alternative to Baidu search.