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.
#135 of 200 in Embeddings.
On FollowIR · Instruction Reranking · English, Sentence Croissant Alpha v0.4 scores -0.1 vs -0 — about the same.
Released 2024-04-27. 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.
Sentence Croissant Alpha v0.4 is an open-weights embeddings & retrieval model from manu, released Apr 2024.
EmbeddingGemma 300M (better), Qwen 3 Embedding 4B (open weights).