Micro.blog has enabled AI generation of photo alt text and search keyword tagging for uploaded photos. I posted the picture below using the micro.blog app on my phone and found the generation does not occur during the upload from the app, however, I do see the generated results when I look at the photos on the Uploads page. I am sure this generation will get integrated with the apps some time down the road, in the mean time I will have to edit after the fact.
Here is the alt text generated for this picture: “A vibrant carnival scene at night features colorful food stalls, a ferris wheel, and bustling visitors.”