Overview
- Similarweb’s January tracker estimates ChatGPT at about 64.5% of web traffic to major AI chatbot sites versus Gemini at 21.5%, up from roughly 5–6% a year ago.
- December data show Gemini’s visits rose about 28% month over month while ChatGPT’s fell around 5.6%, marking a clear post‑Gemini 3 inflection.
- Users spend longer on Gemini with more pages per visit than on ChatGPT, pointing to higher session engagement in Similarweb’s site‑level metrics.
- OpenAI instituted an internal “code red” late last year, pausing some monetization projects to focus on strengthening ChatGPT after Gemini 3’s rollout.
- Analysts caution that Similarweb tracks only direct web visits and excludes apps and embedded usage, with holiday seasonality also weighing on recent totals.