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.
#63 of 89 in Multimodal.
On MIEB English · Image Classification · English, CLIP ViT H 14 Laion2B S32B B79K scores 82.5 vs 82.8 — about the same.
Released 2022-09-15. 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.
CLIP ViT H 14 Laion2B S32B B79K is an open-weights embeddings & retrieval model from laion, released Sep 2022.
EVA02 CLIP B 16 (better).