There is no per-unit API price: price not verified.
#198 of 200 in Embeddings.
On MTEB English v2 · Retrieval · English, Rubert Base Cased scores 2.4 vs 3.2 — about the same.
Released 2020-03-04. It is the current version in its line.
Yes, the weights are open (not specified licence).
The weights are open and can be self-hosted; hardware needs are not confirmed yet.
Rubert Base Cased is an open-weights embeddings & retrieval model from DeepPavlov, released Mar 2020.
EmbeddingGemma 300M (better), Yuan Embedding 2.0 En (open weights).