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ChatGPT's share of gen AI web traffic rises to 56.4% in September 2026

1 article1 sourcesince Oct 12Last article 1h ago ·

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ChatGPT's share of generative AI website traffic rose from 53.7% in April 2026 to 56.4% in September 2026, according to Similarweb data cited by Testing Catalog.

Over the same period Gemini fell from 26.7% to 25.0%, and Claude held at about 9.6%.

Testing Catalog's post argues that Anthropic could change the chart if it targets general consumers as it does developers. The report does not provide evidence for that claim.

Written by AI from the articles below · updated Oct 12, 5:00 AM ET

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Latest developmentOct 12, 4:51 AM ET
ChatGPT regains web traffic share as Gemini slips to 25%

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Oct 12
  1. 🚨 AI News | TestingCatalogX
    ChatGPT regains web traffic share as Gemini slips to 25%

    AIChatGPT's share of gen AI website traffic rose from 53.7% in April 2026 to 56.4% in September 2026, according to Similarweb data cited by Testing Catalog. Gemini fell from 26.7% to 25.0% over the same period, while Claude held at about 9.6%. The post argues Anthropic could shift the chart if it targets general consumers as it does developers.

    Image from @testingcatalog's post

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