ChatGPT and Gemini trade market share in new Similarweb data

Traffic share isn’t the same as capability, but this dataset is a clear sign that OpenAI’s once‑unchallenged distribution advantage is eroding. Similarweb’s numbers suggest ChatGPT’s share of generative‑AI web traffic has fallen nearly 20 percentage points in a year, with Gemini climbing more than three‑fold over the same period.([the-decoder.com](https://the-decoder.com/chatgpts-market-share-falls-to-68-percent-as-gemini-closes-in/)) For the race to AGI, that matters because scale—measured in active users, prompts, and real‑world edge cases—is one of the key inputs for training and refining next‑generation systems.

Google’s surge reflects both product and distribution strategy: Gemini is deeply embedded into Search, Workspace and Android, lowering friction relative to a standalone chatbot site. OpenAI, by contrast, still leans heavily on direct ChatGPT usage and API integrations. If this trend continues, Google will accumulate an increasingly rich stream of multimodal usage data, especially outside the U.S., which can feed back into better alignment, tool use and world‑modeling—core ingredients for AGI‑class systems.([similarweb.com](https://www.similarweb.com/blog/marketing/geo/gen-ai-stats/?utm_source=openai)) For OpenAI and other labs like Anthropic or xAI, the message is blunt: superior raw models are not enough if you lose the default entry points where billions of users actually interact with AI.