AI Chatbot Market Share: ChatGPT vs Gemini vs Claude (November 2026)

ChatGPT had 64.8% of visits to the 9 biggest AI chatbot websites in June 2026, according to Semrush data. That's down from 81.3% in June 2025. Gemini had 13.9% and Claude had 11.8%.

ChatGPT is still the clear leader. But Gemini and Claude are growing much faster.

And different trackers give very different figures, depending on whether they count visits, prompts or referral clicks.

In this article, we'll break down AI chatbot market share by website visits, prompts and referrals, plus LLM market share for businesses and AI search's share compared with Google.

Top AI Chatbot Market Share Statistics

• ChatGPT had 64.8% of AI chatbot website visits in June 2026, down from 81.3% in June 2025 (Semrush, June 2026)
• Gemini's share of AI chatbot website visits rose from 4.6% to 13.9% between June 2025 and June 2026 (Semrush)
• Claude had 13.4% of AI chatbot website visits in the US in June 2026, second only to ChatGPT (Semrush)
• ChatGPT's share of AI prompt volume fell from 70% to 50% between January and June 2026 (Comscore, September 2026)
• ChatGPT sent 80.5% of AI chatbot referrals to websites in September 2026 (Statcounter)
• Anthropic had an estimated 40% of enterprise LLM API spend in 2025, ahead of OpenAI at 27% (Menlo Ventures, December 2025)
• Google had 89.9% of worldwide search engine market share in September 2026 (Statcounter)

What Is the AI Chatbot Market Share in 2026?

ChatGPT had 64.8% of AI chatbot website visits in June 2026, followed by Gemini at 13.9% and Claude at 11.8%. No other AI chatbot had more than 4%.

We added up visits to the 9 biggest AI chatbot websites in Semrush Traffic Analytics. Together, they received 8.21 billion visits in June 2026, up 41.5% from 5.80 billion in June 2025.

Here's a breakdown of AI chatbot market share by website visits in June 2026:

AI Chatbot	Website	Visits (June 2026)	Share of Visits
ChatGPT	chatgpt.com	5.32 billion	64.83%
Gemini	gemini.google.com	1.14 billion	13.86%
Claude	claude.ai	967.9 million	11.79%
DeepSeek	deepseek.com	318.8 million	3.88%
Grok	grok.com	189.9 million	2.31%
Perplexity	perplexity.ai	140.7 million	1.71%
Microsoft Copilot	copilot.microsoft.com	92.7 million	1.13%
Meta AI	meta.ai	32.1 million	0.39%
Le Chat (Mistral)	chat.mistral.ai	7.5 million	0.09%

These figures cover website visits only, not mobile apps. ChatGPT's 5.32 billion visits were more than the other 8 chatbots' visits combined.

For marketers, the takeaway is that ChatGPT is still the biggest audience, but optimizing for ChatGPT alone now misses about a third of AI chatbot visits.

AI Chatbot Market Share in the US

In the US, Claude had 13.4% of AI chatbot website visits in June 2026, ahead of Gemini at 9.2%, according to Semrush data. ChatGPT had 68.7%.

Here's a breakdown of US AI chatbot market share by website visits in June 2026:

AI Chatbot	Website	US Visits (June 2026)	US Share of Visits
ChatGPT	chatgpt.com	966.5 million	68.72%
Claude	claude.ai	187.9 million	13.36%
Gemini	gemini.google.com	128.8 million	9.16%
Grok	grok.com	41.5 million	2.95%
DeepSeek	deepseek.com	28.3 million	2.01%
Perplexity	perplexity.ai	24.4 million	1.73%
Microsoft Copilot	copilot.microsoft.com	24.3 million	1.73%
Meta AI	meta.ai	4.1 million	0.29%
Le Chat (Mistral)	chat.mistral.ai	554,510	0.04%

Claude's US website received 187.9 million visits in June 2026, against 128.8 million for Gemini.

For agencies with US clients, that makes Claude worth tracking alongside ChatGPT and Gemini.

How Has ChatGPT's Market Share Changed Since 2025?

ChatGPT's share of AI chatbot website visits fell from 81.3% in June 2025 to 64.8% in June 2026, according to Semrush data. ChatGPT's visits still grew 12.8% over that time, but rivals grew much faster.

Gemini's visits rose 323%, from 268.7 million to 1.14 billion, according to Semrush. Claude's rose 733%, from 116.1 million to 967.9 million, according to Semrush.

Here's how AI chatbot market share by website visits changed between June 2025 and June 2026:

AI Chatbot	June 2025	January 2026	June 2026
ChatGPT	81.28%	74.39%	64.83%
Gemini	4.63%	10.90%	13.86%
Claude	2.00%	2.98%	11.79%
DeepSeek	5.84%	3.54%	3.88%
Grok	1.94%	3.59%	2.31%
Perplexity	2.49%	2.79%	1.71%
Microsoft Copilot	1.43%	1.28%	1.13%

Similarweb data shows the same shift. ChatGPT's share of visits to generative AI websites fell from 73.3% in August 2025 to 55.5% in August 2026, Similarweb reported. Gemini's share rose from 12.9% to 25.6% over the same period.

You can compare any AI chatbot's monthly visits in Semrush Traffic Analytics. For the latest ChatGPT figures, see Exploding Topics' chatgpt.com traffic page.

For marketers, a shrinking share doesn't mean a shrinking audience. ChatGPT is growing, but the AI chatbot market is growing faster around it.

Why Do AI Chatbot Market Share Figures Differ?

AI chatbot market share figures differ because each tracker measures something different. ChatGPT's share ranges from 50% of prompts to 80.5% of referral clicks, depending on the measure.

Here's a breakdown of AI chatbot market share by tracker and measure:

Tracker	What It Measures	Period	ChatGPT	Gemini	Claude	Source
Semrush	Visits to AI chatbot websites	June 2026	64.8%	13.9%	11.8%	Semrush
Similarweb	Visits to generative AI websites (web only)	August 2026	55.5%	25.6%	9.3%	Similarweb
Comscore	Share of AI prompt volume (panel)	June 2026	50%	30%	11%	Comscore
Statcounter	Referral page views from chatbots to websites	September 2026	80.5%	10.9%	0.95%	Statcounter

Comscore found that ChatGPT's share of AI prompt volume fell from 70% to 50% between January and June 2026, according to its Q2 2026 AI Intelligence Report. Gemini's rose from 17% to 30%, and Claude's from 2% to 11%.

Statcounter counts page views that arrive at websites from a chatbot link. ChatGPT had 80.5% of these AI chatbot referrals worldwide in September 2026, according to Statcounter. Gemini had 10.9%, Perplexity 5.9% and Copilot 1.8%.

Claude's referral share fell from 2.5% in August to 0.95% in September 2026, according to Statcounter. Statcounter says its figures can be revised for 45 days after they're first published.

For SEOs, the referral figures matter most for website traffic. The visit and prompt figures show where your audience asks questions, even when they don't click through.

What Is the LLM Market Share for Businesses?

Anthropic leads on two measures of business LLM use. Anthropic had an estimated 40% of enterprise LLM API spend in 2025, ahead of OpenAI at 27% and Google at 21%, according to Menlo Ventures.

Anthropic's share rose from 12% in 2023 and 24% in 2024, according to Menlo Ventures' 2025 enterprise report. OpenAI's fell from 50% in 2023. Menlo surveyed 495 US enterprise AI decision-makers in November 2025.

Here's a breakdown of LLM market share for businesses:

Measure	Anthropic	OpenAI	Google	Source
Share of enterprise LLM API spend (2025)	40%	27%	21%	Menlo Ventures
Share of businesses paying for each vendor (August 2026)	43.8%	39.8%	Not reported	Ramp AI Index

Ramp's data points the same way. 43.8% of businesses in Ramp's customer base paid Anthropic in August 2026, compared with 39.8% for OpenAI, according to the Ramp AI Index.

For agencies, this means the AI tools your clients' teams use at work may not be the ones they use at home.

How Many People Use Each AI Chatbot?

ChatGPT has 1.2 billion weekly users, as of September 2026, according to OpenAI. The Gemini app has more than 1 billion monthly active users.

OpenAI announced ChatGPT's 1.2 billion weekly users at its DevDay event on September 29, 2026. Google CEO Sundar Pichai said on X that the Gemini app passed 1 billion monthly users in August 2026, TechCrunch reported.

Here's a breakdown of the latest official user figures for AI chatbots:

AI Assistant	Users	Measure	Date	Source
ChatGPT	1.2 billion	Weekly users	September 2026	OpenAI
Gemini app	1 billion+	Monthly active users	August 2026	TechCrunch
Google AI Mode	1 billion+	Monthly active users	May 2026	Google
DeepSeek	130 million	Monthly active app users in China	May 2026	QuestMobile via TechNode
Grok	~117 million	Monthly active users of Grok features	March 2026	SpaceX S-1 filing
Microsoft 365 Copilot	30 million+	Paid seats	July 2026	Microsoft

Each company uses a different measure, so these figures can't be compared directly. Anthropic hasn't published a user figure for Claude.

For more on how people use these tools, see our ChatGPT user statistics and AI usage statistics.

What Is AI Search Market Share Compared With Google?

Google still dominates search. Google had 89.94% of worldwide search engine market share in September 2026, according to Statcounter, down slightly from 90.38% a year earlier.

Here's a breakdown of search engine market share for Google, Bing, Yahoo and DuckDuckGo in September 2026:

Search Engine	Worldwide Share (September 2026)	US Share (September 2026)
Google	89.94%	85.19%
Bing	5.29%	9.91%
Yahoo	1.36%	2.63%
DuckDuckGo	0.74%	1.75%

Google's search share comes from Statcounter's search engine market share data, which counts search referrals to websites. In the same data, Google sent 99.61% of referrals and ChatGPT 0.39% when the two are compared, according to Statcounter.

Google is also bringing AI answers into search. AI Overviews has more than 2.5 billion monthly active users, and AI Mode has more than 1 billion, Google said at Google I/O in May 2026.

AI referrals are small but growing fast. Outbound referral traffic from ChatGPT to other websites grew 206% in 2025, according to a Semrush study. Adobe expects AI traffic to US retail sites to rise 130% year over year in the 2026 holiday season, according to Adobe Analytics.

For SEOs, Google search is still the biggest traffic source, but AI answers now appear inside Google too. Tools like our LLM tracking tools roundup can help you track brand visibility in AI answers.

What Does Search Data Say About AI Chatbot Market Share?

Exploding Topics data shows that searches for "Claude AI" grew 611% between October 2024 and September 2026, according to Exploding Topics. Searches reached 45.5M a month in September 2026, up from 11.4M a year earlier.

Searches for "Google AI Mode" grew from 23.2K a month in October 2024, before AI Mode launched, to 1.83M in September 2026, according to Exploding Topics data.

Here's how monthly search interest in AI chatbots has changed, according to Exploding Topics data:

Search Term	October 2024	September 2025	September 2026	2-Year Change
Claude AI	6.4M	11.4M	45.5M	+611%
Google AI Mode	23.2K	903.4K	1.83M	+7,800%
Perplexity AI	5.3M	9.1M	3.4M	-36%
Character AI	43.9M	36.1M	20.4M	-54%

Not every AI chatbot is growing. Searches for "Perplexity AI" fell 36% over 2 years, and searches for "Character AI" fell 54%, according to Exploding Topics data.

For marketers, search interest can show which AI tools are gaining attention before the traffic data catches up. Exploding Topics helps SEOs and agencies spot fast-growing topics early.

What's Next for AI Chatbot Market Share?

Distribution deals are putting more AI chatbots in front of phone users. Apple's next-generation foundation models will be based on Google's Gemini models, according to a joint statement from Google and Apple in January 2026.

Apple released iOS 27 with a redesigned Siri in September 2026, CNBC reported. The new Siri is in an opt-in beta.

Samsung's Galaxy S26 lets users open Perplexity with a "Hey Plex" wake phrase, 9to5Google reported. And Google is adding Gemini in Chrome on desktop, iOS and Android, according to Google's Chrome team.

We'll update this page as new monthly figures come out.

How We Compiled These Statistics

We calculated AI chatbot market share from Semrush Traffic Analytics total visits (desktop and mobile web) for 9 AI chatbot websites: chatgpt.com, gemini.google.com, claude.ai, deepseek.com, grok.com, perplexity.ai, copilot.microsoft.com, meta.ai and chat.mistral.ai. Each chatbot's share is its visits divided by the total for all 9. We also used figures from Similarweb, Comscore, Statcounter, Menlo Ventures and Ramp, plus official company announcements and filings. Search figures come from Exploding Topics. Figures are as of October 7, 2026.

For more on AI tools and AI search, take a look at:

• AI Chatbot Statistics
• Most Popular AI Tools
• Perplexity AI Statistics
• List of LLMs
• AI Search Engines
• AI Search Monitoring Tools

AI chatbot market share is shifting month by month, so the tools your audience uses today may not be the ones they use next year. Use Exploding Topics Pro to spot fast-growing AI tools early. And use Semrush Traffic Analytics to compare any AI chatbot's website traffic, month by month, and see where your audience is going next.