Perplexity

AI answer engine with cited sources

Combines web search and LLM answers for research, source discovery, competitor checks and news tracking.

AI Search AI Chat AI Writing搜索研究引用来源新闻

Features

Freemium

AI search and productivity platform

AI search platform combining search, chat, writing and research workflows.

搜索聊天研究

Freemium

Google multimodal AI assistant

Google's AI assistant and model entry point for search, productivity, image understanding and ecosystem integration.

多模态Google搜索

Freemium

Long-context writing, analysis and coding assistant

Anthropic's AI assistant for long document analysis, writing, reasoning, coding collaboration and reliable enterprise workflows.

长上下文写作代码研究

Freemium

Realtime AI assistant in the X ecosystem

xAI's chat and search assistant focused on realtime information and social content understanding.

实时搜索X