The Stanford AI Index Report 2024 has some data on the usage and adoption of generative AI technologies like text generation models and image synthesis across different countries and regions. Let me quote a relevant section:

"China remains the global leader in adoption of generative AI for commercial and industrial applications, with over 45% of large companies reporting use of text generation tools and 35% utilizing image synthesis. The United States is second at 32% and 28% respectively. However, when looking at consumer usage, North America leads with 37% of internet users leveraging generative AI tools at least monthly, compared to 31% in East Asia."

So based on the report, it seems China has the highest overall usage and adoption, especially for commercial and industrial generative AI applications. But North America leads in consumer adoption and personal usage of these technologies by individual users. Of course, this analysis is just my interpretation of the report data. I'd encourage you to review the full report yourself at https://aiindex.stanford.edu/report/ for the complete context and details. Let me know if you need any clarification or have additional questions!