Three data sources tell the same story: Google's Gemini is losing AI market share. Pangram reports a drop from 12 to 1.9 percent, while OpenAI holds over 50 percent, and Anthropic grew from 4.3 to 14.9 percent. Similarweb and OpenRouter confirm the trend.

Google said in a Tuesday blog post 63% of users directly talk to Gemini, including more “voice only” users.

OpenAI’s still the chatbot leader, but the race appears to be tightening fast.