Not "world's first" by a long shot.
Someone's made a python script in June 2024 to do it semi-automatically using SD 1.5: https://github.com/414design/4lph4bet_processor
I'd like to add that tom7 used AI to generate an upperercase and lowerercase font in 2021. https://tom7.org/lowercase/
I'd like to add that tom7 used AI to generate an upperercase and lowerercase font in 2021. https://tom7.org/lowercase/