Sentence Transformers v5.6 fixes a silent causal-LM reranker scoring bug

The release fixes a silent scoring bug affecting causal-LM rerankers such as Qwen3-Reranker, plus hard-negative mining and loss-correctness issues

I've just released Sentence Transformers v5.6.0! A correctness- & robustness-focused release, headlined by a fix for a silent scoring bug in causal-LM rerankers (think Qwen3-Reranker), plus a batch of hard-negative mining & loss-correctne

Ranked #11 on backlist 2026-06-16 (16 Jun 2026 UTC) · by @tomaarsen · view on X ↗

How it ranks: Backlist reads my Twitter/X timeline, scores every tweet for substance with an LLM rubric (not engagement), and publishes the daily top picks with a one-line takeaway. Curated by Surya Dantuluri.