What is the fastest growing AI company?

Could you please elaborate on what criteria you're using to determine the fastest growing AI company? Are we talking about revenue growth, user base expansion, or perhaps a combination of several factors? Additionally, how are you defining "AI company" specifically, as the field encompasses a wide range of businesses from startups to established tech giants with AI-driven products and services? It would be helpful to have a clearer understanding of these parameters to accurately identify the fastest growing AI company.