ChatGPT's Share Fell From 77.6% to 52% as Gemini and Claude Surge. Here's What Latest AI Data Reveal

Key Highlights

• ChatGPT's traffic share declined from 77.6% to approximately 52% over the past year.
• Gemini grew from 7.27% to nearly 27%.
• Claude expanded from 1.37% to almost 8%.
• OpenAI remains the largest AI assistant platform globally.
• AI traffic is becoming increasingly distributed across multiple platforms.
• The market is evolving from AI dominance to AI competition.

For much of the past two years, ChatGPT has been the undisputed leader in generative AI. However, new traffic data suggests the competitive landscape is changing rapidly.

According to Similarweb's latest GenAI traffic share data, ChatGPT's share of AI assistant traffic has declined from 77.6% a year ago to nearly 52% today. While OpenAI remains the clear market leader, rivals such as Google's Gemini and Anthropic's Claude are steadily gaining ground.

The numbers reveal an important shift: the AI market is no longer dominated by a single platform. Instead, users are increasingly exploring multiple AI assistants based on their specific needs and workflows.

What the Similarweb Data Shows

The latest Similarweb chart highlights one of the biggest shifts in the AI industry since ChatGPT launched.

A Year Ago, ChatGPT Dominated the Market

In May 2025, ChatGPT controlled nearly 78% of AI assistant traffic.

At that point, most competitors remained relatively small:

• ChatGPT: 77.6%
• Gemini: 7.27%
• DeepSeek: 6.01%
• Grok: 3.17%
• Perplexity: 1.75%
• Copilot: 1.56%
• Claude: 1.37%

The gap between ChatGPT and every other AI platform was enormous.

The Market Looks Very Different Today

Fast forward 12 months and the picture has changed considerably.

Recent Similarweb data shows:

• ChatGPT: ~52%
• Gemini: ~27%
• Claude: ~8%
• DeepSeek: ~4%
• Grok: ~3%
• Copilot: ~2%
• Perplexity: ~1.5%

While ChatGPT remains the market leader, competitors have significantly increased their share of AI traffic.

Gemini Is Emerging as OpenAI's Biggest Challenger

Among all AI competitors, Gemini has recorded the most significant gains.

Google's Distribution Advantage Is Paying Off

Gemini benefits from something few AI products can match: Google's ecosystem.

The AI assistant is now integrated into:

• Google Search
• Android
• Workspace
• Chrome
• Google Cloud

This allows Google to place Gemini directly in front of billions of existing users.

Gemini's Growth Has Been Remarkable

Over the past year, Gemini's traffic share has grown from just over 7% to nearly 27%.

That growth suggests users are increasingly turning to Google's AI assistant for everyday productivity, research, and work-related tasks.

Claude's Rise May Be the Most Interesting Story

While Gemini is growing through scale, Claude is growing through specialization.

Anthropic's chatbot has become increasingly popular among developers, researchers, and enterprise users.

Claude Has Increased Its Share Nearly Sixfold

A year ago, Claude accounted for just 1.37% of AI traffic.

Today, it is approaching 8%.

That makes Claude one of the fastest-growing AI assistants in the market.

Why Professionals Are Choosing Claude

Claude has built a strong reputation for:

• Advanced reasoning
• Long-context processing
• Coding assistance
• Enterprise-friendly features

These strengths have helped Anthropic carve out a distinct position in the AI ecosystem.

ChatGPT Isn't Losing Users, The Market Is Getting Bigger

One of the most important points often missed in discussions about market share is that lower share does not necessarily mean fewer users.

ChatGPT continues to attract enormous traffic and remains the most widely used AI assistant globally.

The difference is that the AI market itself has expanded dramatically. As more users adopt AI tools, competitors now have more opportunities to grow without directly taking users away from OpenAI.

AI Is Entering Its Multi-Platform Era

The latest traffic trends suggest users are increasingly choosing different AI assistants for different tasks.

For example:

• ChatGPT for general productivity and content creation
• Gemini for Google ecosystem workflows
• Claude for reasoning and coding tasks
• Perplexity for AI-powered search
• Grok for real-time information

This specialization is helping create a more diverse and competitive AI landscape.

The Market Is Beginning to Mature

The AI industry is starting to resemble other mature technology categories where several major players coexist rather than one platform dominating everything.

That competition is likely to accelerate innovation and provide users with more choices in the years ahead.

What This Means for Businesses and Marketers

The rise of Gemini and Claude carries an important lesson for brands focused on AI visibility.

Optimizing for ChatGPT Alone Is No Longer Enough

Businesses investing in:

• AI Search Optimization
• Generative Engine Optimization (GEO)
• AI referrals
• Brand visibility

should increasingly monitor performance across multiple AI platforms.

As user attention spreads across ChatGPT, Gemini, Claude, Perplexity, and others, visibility strategies must evolve accordingly.

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The Bigger Story Behind the Numbers

The most important takeaway from Similarweb's latest data is not that ChatGPT's share has fallen.

It is that the AI market has become genuinely competitive.

A year ago, ChatGPT was effectively the default AI assistant. Today, Gemini and Claude have established themselves as credible alternatives with growing audiences and distinct strengths.

Rather than a winner-takes-all market, AI is increasingly becoming a multi-player ecosystem.

Conclusion

ChatGPT remains the world's largest AI assistant, but its dominance is no longer as overwhelming as it once was. Similarweb's latest traffic data shows Gemini and Claude gaining momentum at a rapid pace, signaling a more competitive phase for the AI industry. As users increasingly adopt multiple AI tools, the future of generative AI is likely to be shaped by several major platforms rather than a single market leader.