ChatGPT web traffic share rebounds to 55.5%, still down from 73%

ChatGPT's share of AI chatbot website traffic rose back to 55.5%, according to Similarweb data cited by The Decoder. That's still down sharply from 73.3% a year earlier, as Gemini roughly doubled its share and Claude grew nearly fivefold over the same period. The figures cover web traffic only, not mobile apps or desktop clients.

Why it matters: The year-over-year erosion in ChatGPT's dominance lines up with Google folding conversational AI into Gmail, Docs, and Keep, while Anthropic's aggressive compute buildout suggests it's positioning for sustained growth rather than a one-off spike. Web-only traffic likely understates ChatGPT's real usage given its strong separate mobile app base, so the trend line matters more than the absolute share.