Comscore March 2026 Consumer AI Chatbot Usage Rankings Show Claude Gaining Share

Comscore (SCOR) released its March 2026 U.S. desktop consumer AI chatbot usage rankings, showing 44.4 million combined unique visitors, up 21.3% month over month.

Rhea-AI Summary

Comscore (SCOR) released its March 2026 U.S. desktop consumer AI chatbot usage rankings, showing 44.4 million combined unique visitors, up 21.3% month over month.

ChatGPT led with 33.86M visitors, while Claude grew 130.1% to 2.66M, moving into fourth place.

Argus May 18 session

-4.76% close to close Open Argus

Details

News Market Reaction – SCOR

In the May 18 session, SCOR declined 4.76%, reflecting a moderate negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement highlights Comscore’s role in quantifying AI assistant adoption, with combined U.S...

Analysis

This announcement highlights Comscore’s role in quantifying AI assistant adoption, with combined U.S. desktop visitors of 44.4M in March 2026 and 21.3% month-over-month growth. ChatGPT led at 33.86M visitors, while Claude’s 130.1% gain to 2.66M underscored rising competitive diversity. Historically, similar AI-tagged releases have produced an average -1.16% 24-hour stock move, so investors may watch how consistently these data products translate into revenue and margin improvement over time.

Key Figures

Total AI chatbot visitors: 44.4M Category MoM growth: 21.3% ChatGPT visitors: 33.86M +5 more

Total AI chatbot visitors

44.4M

Combined U.S. desktop unique visitors, March 2026

Category MoM growth

21.3%

Increase in combined U.S. desktop visitors vs February 2026

ChatGPT visitors

33.86M

U.S. desktop unique visitors, March 2026

ChatGPT MoM change

18.9%

Month-over-month growth in U.S. desktop visitors

Gemini visitors

10.66M

U.S. desktop unique visitors, March 2026

Copilot visitors

5.02M

U.S. desktop unique visitors, March 2026

Claude visitors

2.66M

U.S. desktop unique visitors, March 2026

Claude MoM change

130.1%

Month-over-month growth in U.S. desktop visitors

Previous AI Reports

5 past events · Latest: Jan 29

Same Type 5 events

1. Jan 29

   AI usage growth

   24h Move

   -3.1%

   Reported triple-digit AI assistant growth on mobile and strong desktop usage.

2. Dec 08

   AI benchmarks report

   24h Move

   +0.1%

   Released 2025 AI Intelligence Report with broad adoption and engagement metrics.

3. Sep 03

   Mobile AI surge

   24h Move

   -0.3%

   Highlighted surge in mobile AI tool usage as PC usage declined.

4. Sep 03

   AI data network

   24h Move

   -0.3%

   Launched AI-powered Data Partner Network to scale privacy-first audiences.

5. May 29

   AI tool tracking

   24h Move

   -2.2%

   Added consumer AI tool usage data tracking 117 tools across nine categories.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

ai chatbot, ai assistants, month-over-month

3 terms

ai chatbot technical

"Consumer AI Chatbot Usage Rankings, highlighting continued momentum across major AI assistant platforms"

A AI chatbot is software that uses artificial intelligence to simulate human-like conversation, acting like a virtual assistant that answers questions, completes tasks, or guides users through services. For investors, it matters because chatbots can lower customer service costs, speed sales and support, and create new revenue channels, but they also introduce technology, data-privacy and compliance risks that can affect a company’s costs, growth and reputation.

ai assistants technical

"adoption of AI assistants is a call to action, with growth in usage occurring"

AI assistants are software tools that use artificial intelligence to perform tasks like answering questions, summarizing documents, and automating routine work; think of them as skilled, fast digital helpers that handle information and repetitive chores. For investors, they can lower operating costs, speed research and decision-making, and reshape competitiveness and profitability across industries, while also introducing risks around accuracy, data security and regulatory oversight.

month-over-month financial

"reaching 33.86 million U.S. desktop unique visitors in March, up 18.9% month over month"

Month-over-month compares a metric in one month to the previous month to show short-term change, usually expressed as a percentage. Investors use it to spot recent momentum or weakness—like checking a company's sales or production as if watching last month's speedometer reading—because it reveals whether performance is improving, slipping, or stable in the near term and can signal shifting trends before longer-term measures do.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

OpenAI’s ChatGPT maintains lead while Anthropic’s Claude continues to catch up

RESTON, Va., May 18, 2026 (GLOBE NEWSWIRE) -- Comscore, a global leader in measuring and analyzing consumer behaviors, today released its March 2026 Consumer AI Chatbot Usage Rankings, highlighting continued momentum across major AI assistant platforms in the United States. According to Comscore’s analysis of U.S. desktop engagement, major consumer AI chatbot platforms reached a combined 44.4 million unique visitors in March 2026, representing a 21.3% increase from February.

OpenAI’s ChatGPT maintained its position as the category leader, reaching 33.86 million U.S. desktop unique visitors in March, up 18.9% month over month. Google Gemini ranked second with 10.66 million unique visitors, followed by Microsoft Copilot with 5.02 million.

Anthropic’s Claude was the fastest-growing platform in the rankings, increasing 130.1% month over month to reach 2.66 million unique visitors. The platform’s March performance moved Claude solidly into fourth place among tracked consumer AI chatbots.

“For brands and advertisers wanting to maintain their influence and visibility with consumers, the acceleration of adoption of AI assistants is a call to action, with growth in usage occurring across both established leaders and emerging challengers,” said Smriti Sharma, Executive Vice President, Analytics & Managing Director, Custom IQ. “The March rankings demonstrate why measurement is essential for allocating marketing and advertising resources because while ChatGPT remains the clear leader, platforms such as Claude, Copilot and Gemini are gaining meaningful traction as consumers explore a broader range of AI tools.”

March 2026 Consumer AI Chatbot Usage Rankings

U.S. Desktop Unique Visitors

Rank	Platform	Visitors	Month-over-Month Change
1	OpenAI ChatGPT	33.86M	+18.9%
2	Google Gemini	10.66M	+29.1%
3	Microsoft Copilot	5.02M	+44.4%
4	Anthropic Claude	2.66M	+130.1%
5	X Grok	1.65M	+9.9%
6	DeepSeek	0.41M	+46.2%
7	Perplexity	0.36M	+20.5%

About Comscore
Comscore is a global, trusted partner for planning, transacting and evaluating media across platforms. With an unmatched data footprint that combines digital, linear TV, over-the-top and theatrical viewership intelligence with advanced audience insights, Comscore empowers media buyers and sellers to quantify their multiscreen behavior and make meaningful business decisions with confidence. A proven leader in measuring digital and TV audiences and advertising at scale, Comscore is the industry's emerging third-party source for reliable and comprehensive cross-platform measurement.

Media Contact:
Marie Scoutas
press@comscore.com

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many U.S. desktop visitors used ChatGPT in March 2026 according to Comscore (SCOR)?

ChatGPT reached 33.86 million U.S. desktop unique visitors in March 2026, according to Comscore. This represented an 18.9% month-over-month increase, keeping ChatGPT as the leading consumer AI chatbot platform by desktop engagement in the United States during that month.

How fast did Anthropic Claude grow in Comscore's March 2026 AI chatbot rankings?

Anthropic Claude grew 130.1% month over month in March 2026, according to Comscore. That surge took Claude to 2.66 million U.S. desktop unique visitors, moving it into fourth place among tracked consumer AI chatbots in the Comscore rankings.

What were the total U.S. desktop users of consumer AI chatbots in March 2026 per Comscore (SCOR)?

Consumer AI chatbots reached a combined 44.4 million U.S. desktop unique visitors in March 2026, according to Comscore. This total represented a 21.3% increase from February, highlighting accelerating adoption of AI assistant platforms among U.S. desktop users during the period.

How did Google Gemini and Microsoft Copilot rank in Comscore's March 2026 AI chatbot report?

Google Gemini ranked second with 10.66 million U.S. desktop unique visitors, while Microsoft Copilot ranked third with 5.02 million, according to Comscore. Month over month, Gemini grew 29.1% and Copilot grew 44.4% in Comscore’s March 2026 rankings.

Which consumer AI chatbot was the fastest-growing in March 2026 in Comscore's rankings?

Anthropic Claude was the fastest-growing consumer AI chatbot in March 2026, according to Comscore. Claude’s U.S. desktop unique visitors increased 130.1% month over month to 2.66 million, giving it fourth place among tracked AI assistant platforms for that month.

How did smaller AI chatbots like X Grok, DeepSeek, and Perplexity perform in Comscore's March 2026 data?

According to Comscore, X Grok had 1.65 million U.S. desktop visitors in March 2026, DeepSeek 0.41 million, and Perplexity 0.36 million. Their month-over-month growth rates were 9.9% for X Grok, 46.2% for DeepSeek, and 20.5% for Perplexity.