There is no per-unit API price: price not verified.
#124 of 200 in Embeddings.
On LongEmbed · Mean over tasks · English, Multilingual E5 Small scores 38.8 vs 38.9 — about the same.
Released 2024-02-08. 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.
Multilingual E5 Small is an open-weights embeddings & retrieval model from intfloat, released Feb 2024.
E5 Base v2 (better), Uibk Embedding v1 (open weights).