Ettin reranker family released with state-of-the-art performance

Six CrossEncoder rerankers (17M–1B params) built on ModernBERT, trained via pointwise MSE distillation, outperform legacy rerankers on MTEB and NanoBEIR. The Ettin family gives RAG and search practitioners a modern, scalable reranking option with state-of-the-art retrieval accuracy across multiple scales.