Softpick: No Attention Sink, No Massive Activations with Rectified Softmax
Zayd Muhammad Kawakibi Zuhri, Erland Hilman Fuadi, Alham Fikri Aji
Abstract
We introduce softpick, a rectified, not sum-to-one, drop-in replacement for softmax in transformer attention mechanisms that eliminates attention sink and massive activations. Our experiments with 340M and 1.8B parameter models demonstrate that softpick achieves 0% sink rate consistently. The softpick transformers produce hidden states with significantly lower kurtosis and creates sparse attention maps. Quantized models using softpick outperform softmax on standard benchmarks, with a particularly pronounced advantage at lower bit precisions. Our analysis and discussion shows how softpick has the potential to open new possibilities for quantization, low-precision training, sparsity optimization, pruning, and interpretability. Our code: https://github.com/zaydzuhri/softpick-attention.- Anthology ID:
- 2026.findings-acl.905
- Volume:
- Findings of the Association for Computational Linguistics: ACL 2026
- Month:
- July
- Year:
- 2026
- Address:
- San Diego, California, United States
- Editors:
- Maria Liakata, Viviane P. Moreira, Jiajun Zhang, David Jurgens
- Venue:
- Findings
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 18179–18213
- Language:
- URL:
- https://preview.aclanthology.org/ingest-acl-workshops/2026.findings-acl.905/
- DOI:
- Cite (ACL):
- Zayd Muhammad Kawakibi Zuhri, Erland Hilman Fuadi, and Alham Fikri Aji. 2026. Softpick: No Attention Sink, No Massive Activations with Rectified Softmax. In Findings of the Association for Computational Linguistics: ACL 2026, pages 18179–18213, San Diego, California, United States. Association for Computational Linguistics.
- Cite (Informal):
- Softpick: No Attention Sink, No Massive Activations with Rectified Softmax (Zuhri et al., Findings 2026)
- PDF:
- https://preview.aclanthology.org/ingest-acl-workshops/2026.findings-acl.905.pdf