AI Share LabAI SHARE / USAGE / TREND
By use case ・ AI search

Best AI search engines — ranking

A recommended ranking of AI search tools strong at web search, citations and up-to-date information, compared by popularity share and features.

A. The bottom line for AI search
#1 is Perplexity.Then Google Gemini, ChatGPT. Recommended in this order, prioritizing Web search・File reading.
1
Perplexity
Perplexity AI ・ Popularity score 36.9 ・ share 7.9%
Free tier
$20/mo+

An AI search engine that answers with citations; very popular for search use cases.

Web search: ○File reading: ○
2
Google Gemini
Google ・ Popularity score 37.2 ・ share 7.0%
Free tier
$7.99/mo+

Google's AI chat — strong at search and Google-service integration; share is rising fast, especially in Japan.

Web search: ○File reading: ○
3
ChatGPT
OpenAI ・ Popularity score 77.1 ・ share 77.6%
Free tier
$8/mo+

OpenAI's AI chat — the default choice, leading the global AI chatbot market share by a wide margin.

Web search: ○File reading: ○
4
Grok
xAI ・ Popularity score 35
Free tier
$10/mo+

xAI's AI chat — known for X (formerly Twitter) integration, real-time info and image generation.

Web search: ○File reading: ○

Source: StatCounter (market share) + each official site (features, pricing) ／ Captured: 2026-06 ／ Reference ranking by our editors

Frequently asked questions

Which AI is the best for AI search?
Perplexity. The rating prioritizes support for Web search・File reading and popularity share.
What is this ranking based on?
An editorial reference ranking that combines support for the features that matter for AI search (Web search・File reading) with market share and the popularity score.

Other rankings by use case

Best AI for Coding→Best AI for Writing→Best AI for Image generation→Best AI for Free→Best AI for Translation→Best AI for Meeting notes→Best AI for Documents→

⚠ These rankings are reference values based on public market-share data, web-traffic estimates and editorial research, and do not represent a complete count of every user of each AI tool. Rankings change with the measurement method (web-visit share vs. market share, etc.). Always check each official site for the latest information.