LIVE DATA BOARD ・ Sep 2026

AI usage & market share, ranked with data

Market share, popularity, trends, history and pricing for ChatGPT, Gemini, Claude, Perplexity, Copilot, Grok and DeepSeek — ranked from monthly snapshots of public data. Updated monthly so you can see the AI landscape and fastest-rising AIs at a glance.

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Q. Which AI has the highest usage & share right now?

As of Sep 2026, in worldwide AI-chatbot market share, ChatGPT is #1 at about 80.1%, followed by Google Gemini and Perplexity (source: StatCounter).

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Worldwide AI share board

AI usage ranking

Worldwide AI-chatbot market share (Sep 2026)

#	AI tool	Share	MoM
1	ChatGPT OpenAI	80.08%	—
2	Google Gemini Google	11.04%	—
3	Perplexity Perplexity AI	4.94%	—
4	Microsoft Copilot Microsoft	2.06%	—
5	Claude Anthropic	1.86%	—
6	DeepSeek DeepSeek	0.02%	—

Source: StatCounter Global Stats（AI Chatbot Market Share, Desktop & Mobile）／ Captured: 2026-09 （provisional）／ reference value (market share based on web-referral traffic)
The current month is a provisional, month-to-date figure. Month-over-month change and risers/fallers are based on the latest completed month.

Share trend

Share history of major AIs (worldwide, monthly)

ClaudePerplexityChatGPTGoogle GeminiMicrosoft Copilot

▲ Fastest rising

AIs that gained share (MoM)

Month-over-month basis: Aug 2026 (completed month)

ChatGPT79.42%▲1.51 Google Gemini10.92%▲1.00 DeepSeek0.02%▼0.01

▼ Biggest drops

AIs that lost share (MoM)

Month-over-month basis: Aug 2026 (completed month)

Perplexity4.34%▼1.52 Claude2.53%▼0.67 Microsoft Copilot2.77%▼0.30

AI usage in Japan

AI share ranking in Japan (Sep 2026)

Japan share details →

1ChatGPT

67.4%Japan share ・ —

2Google Gemini

23.3%Japan share ・ —

3Microsoft Copilot

7.9%Japan share ・ —

4Claude

1.1%Japan share ・ —

In Japan, Gemini tends to hold a higher share than the world average. See the AI Share page for details.

By use case

Best AI by purpose — rankings

Best AI for Coding→Best AI for AI search→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→

Popular comparisons

Compare AI tools (vs)

All comparisons →

ChatGPT vs Google Gemini→ChatGPT vs Claude→Claude vs Google Gemini→ChatGPT vs Perplexity→Google Gemini vs Claude→Claude vs Perplexity→

Frequently asked questions

Which tool has the highest AI usage / share?

In worldwide market share for Sep 2026, ChatGPT is the largest at about 80.1% (StatCounter, Desktop & Mobile). Note that rankings change with the measurement method.

Where does this ranking's data come from?

Market share comes from StatCounter Global Stats' public data (AI chatbot market share), saved as monthly snapshots with source and capture date noted. Pricing and features are reference values compiled by our editors from each official site.

Can I see the AI usage ranking for Japan?

Yes. The Japan share ranking and history are on the AI Share page. In Japan, Gemini tends to have a higher share than worldwide.

⚠ 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.