ToolsSeptember 7, 2026via The Decoder
ChatGPT claws back web traffic share to 55.5 percent as Gemini's brief comeback fades
Why it matters
Market share volatility in the consumer AI chatbot space signals shifting user preferences and competitive pressure on OpenAI's dominance, relevant to practitioners choosing platforms and strategists tracking the AI product landscape.
Key signals
- ChatGPT: 55.5% current market share
- ChatGPT: 73.3% market share year-over-year (down 17.8 points)
- Gemini: doubled its share YoY
- Claude: grew nearly fivefold YoY
- Data source: Similarweb
- Mobile apps and desktop clients excluded from measurement
- Metric: web traffic share only
- ChatGPT: 55.5% current web traffic share
- ChatGPT year-over-year decline: 73.3% → 55.5% (17.8 point drop)
- Gemini doubled its share YoY
- Claude grew nearly 5x YoY
- Note: mobile apps and desktop clients excluded from measurement
The hook
ChatGPT holds 55.5% of AI chatbot web traffic—but its year-over-year lead collapsed from 73.3% as Gemini and Claude surge.
ChatGPT has pushed its share of AI chatbot website traffic back up to 55.5 percent, according to Similarweb. Year-over-year, though, its lead shrank sharply from 73.3 percent as Gemini doubled its share and Claude grew nearly fivefold. Mobile apps and desktop clients aren't included.