It certainly seemed good enough for my use. I feed it some random images I found online, you can see the sort of metadata it outputs in a static dump here:
It's not perfect, by any means, but between the keywords and description text, it's good enough for me to be able to find images in a larger collection.
https://q726kbxun.github.io/llama_cpp_vision/index.html
It's not perfect, by any means, but between the keywords and description text, it's good enough for me to be able to find images in a larger collection.