ChatGPT's web traffic share dropped from 78% to 54% in one year as Gemini quietly tripled its reach
ChatGPT's web traffic share collapsed from 78% to 54% in one year. Gemini tripled to 27%.

Why it matters
The AI chatbot market is shifting rapidly. ChatGPT's dominance is eroding as Google's Gemini scales, signaling a fundamental change in user preference and competitive dynamics that will reshape investment thesis and platform strategy.
The key facts
5 to knowChatGPT web traffic share: 77.6% → 53.7% (24-point drop in 12 months)
Google Gemini web traffic share: 7.3% → 26.7% (19.4-point gain)
Data source: Similarweb
Caveat: Web traffic only; excludes API usage and mobile app usage
Timeline: 12-month period (May 2025–May 2026)
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: ChatGPT's website traffic share dropped from 77.6% to 53.7% in just twelve months, according to Similarweb. Google Gemini is the biggest winner, jumping from 7.3% to 26.7%. The numbers only cover web traffic, though, not API usage or apps.