Similarweb: 93.7% of ChatGPT visitors also use Google, overlap keeps widening
gaganghotra_ · x · 2026-10-25
Similarweb's September 2026 audience-overlap data: 14.1% of primary Google visitors also visited ChatGPT, while 93.7% of primary ChatGPT visitors also visited Google. The chart shows overlap steadily widening since 2023, but ChatGPT users remain almost entirely within Google's orbit — ChatGPT isn't yet eroding Google's core usage.
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