There is no per-unit API price: self-host only.
There is no free API. The weights are open, so you can run it yourself.
#88 of 89 in Multimodal.
On MIEB multilingual · Image Clustering · English, Blip Image Captioning Large scores 73.7 vs 73.9 — about the same.
Released 2023-12-07. It is the current version in its line.
Yes, the weights are open (bsd-3-clause licence).
The weights are open and can be self-hosted; hardware needs are not confirmed yet.
Blip Image Captioning Large is an open-weights embeddings & retrieval model from Salesforce, released Dec 2023.
Jina Embeddings v5 Omni Small (better), EVA02 CLIP B 16 (open weights).