Google's Gemini has reportedly tripled its generative AI web traffic share in the past year, growing from 5.4% to 18.2%, according to SimilarWeb. This surge has led to a decrease in ChatGPT's market share from 87.2% to 68%. A Menlo Ventures report indicates OpenAI lost 27% share while Gemini gained 21%, with Anthropic dominating at 40%. This growth has positively impacted Alphabet's stock, which has risen over 65.5% this year, suggesting increased competition between Google and OpenAI.