There's a very brief section estimating CO2 impact and a chart at the end of Chapter 1: https://hai.stanford.edu/ai-index/2025-ai-index-report/research-and-dev

There's a very brief section estimating CO2 impact and a chart at the end of Chapter 1: https://hai.stanford.edu/ai-index/2025-ai-index-report/research-and-development https://hai.stanford.edu/ai-index/2025-ai-index-report/resea... A few more charts in the PDF (pp. 48-51) https://hai-production.s3.amazonaws.com/files/hai_ai-index-report-2025_chapter1_final.pdf https://hai-production.s3.amazonaws.com/files/hai_ai-index-r...