AI Search Engine — Best AI Tools (2026)

You.com is an AI-first search engine and assistant. It combines web search, chat, image generation, and research agents powered by multiple LLMs (GPT, Claude, Gemini), with a focus on cited answers and productivity apps.

Perplexity is an AI-powered answer engine that combines real-time web search with LLM reasoning to deliver cited, up-to-date answers. Pro adds access to frontier models and advanced research modes.

DeepSearch is an online search tool aimed at deeper discovery. It advertises advanced search that surfaces hidden insights and precise results from across the web.

Consensus uses AI to search and summarize findings from over 200 million peer-reviewed scientific papers, helping researchers find evidence-based answers.