There is no per-unit API price: API price not public.
There is no free API. The weights are open, so you can run it yourself.
#114 of 200 in Embeddings.
On MTEB Korean v2 · STS · Korean, E5 Small v2 scores 34.2 vs 34.7 — 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.
E5 Small v2 is an open-weights embeddings & retrieval model from intfloat, released Feb 2024.
Bge Base En v1.5 (better), Qwen 3 Embedding 4B (open weights).