There is no per-unit API price: price not verified.
#109 of 200 in Embeddings.
On MTEB Medical v1 · Reranking · Mandarin Chinese, E5 Large scores 19.7 vs 19.8 — about the same.
Released 2022-12-26. It is the current version in its line.
Yes, the weights are open (Apache-2.0 licence).
The weights are open and can be self-hosted; hardware needs are not confirmed yet.
E5 Large is an open-weights embeddings & retrieval model from intfloat, released Dec 2022.
E5 Base v2 (better), Yuan Embedding 2.0 Zh (open weights).