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Large Language ModelsAI Business & IndustryTHE DECODERPublished: Sep 8, 2026, 06:00 JST2 min read

ChatGPT web traffic share back to 55.5% as Gemini fades

ChatGPT web traffic share back to 55.5% as Gemini fades

3 Key Points

  1. What happened

    ChatGPT has regained share of AI chatbot website traffic, climbing from 52.7 percent three months ago to 55.5 percent, according to Similarweb. Google Gemini slipped from 27.8 to 25.6 percent.

  2. Why it matters

    Year-over-year, ChatGPT's lead shrank sharply from 73.3 percent. Gemini doubled its share, and Anthropic's Claude grew from 1.9 to 9.3 percent, while DeepSeek (3.4 percent), Grok (2.4 percent), Copilot (1.6 percent), and Perplexity (0.9 percent) remain bit players.

  3. What to watch

    These figures cover website traffic only, so the competitive picture may be incomplete. Google likely drives many mobile Gemini interactions through its Android ecosystem, and OpenAI's mobile app and new desktop version ChatGPT Work are not included in the stats.

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Context & Analysis

The new Similarweb data shows the competitive landscape of AI chatbots is shifting. While ChatGPT remains the dominant player in website traffic, its lead has shrunk considerably over the past year, down from 73.3 percent to 55.5 percent. This suggests that while OpenAI still holds a commanding position, its rivals are beginning to chip away at its advantage, even as ChatGPT has managed to stabilize recently after a period of decline.

The data also highlights the volatility in this market. Gemini, after a strong comeback, is slipping again, while Claude has seen significant growth. The publisher's note that Google likely drives many mobile Gemini interactions through its Android ecosystem, which are not captured by these web-only figures, is a crucial caveat that suggests the true competitive picture may differ from what these numbers show. Similarly, OpenAI's push into desktop with ChatGPT Work is also invisible here.

For business readers, the key takeaway is that the AI chatbot market is still in flux. The race is no longer just about web traffic; it is increasingly about distribution across mobile and desktop platforms. The trajectory of ChatGPT and its competitors will hinge on how effectively they can extend their presence beyond the traditional web, a dynamic that these current figures do not fully capture.

FAQ
What data is excluded from these market share figures?
The figures cover website traffic only. They exclude mobile app usage and desktop clients, including OpenAI's ChatGPT Work and Google's mobile Gemini app interactions driven through its Android ecosystem.
How much did Claude's market share grow?
Anthropic's Claude grew from 1.9 percent to 9.3 percent year-over-year.

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