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.
#82 of 89 in Multimodal.
On MIEB multilingual · Image Classification · English, Blip2 Opt 6.7B Coco scores 73.9 vs 74.5 — about the same.
Released 2024-03-31. It is the current version in its line.
Yes, the weights are open (MIT licence).
The weights are open and can be self-hosted; hardware needs are not confirmed yet.
Blip2 Opt 6.7B Coco is an open-weights embeddings & retrieval model from Salesforce, released Mar 2024.
EVA02 CLIP B 16 (better).