Sasha Rush
ML researcher at Cursor; former Cornell and Harvard professor and Hugging Face researcher
- ML Researcher, Cursor (Anysphere)12
Sasha Rush (Alexander M. Rush in paper bylines) is an ML researcher at Cursor who studies post-training of AI systems for coding and related tasks. From 2016 to 2026 Rush was a professor at Harvard and then Cornell, and from 2019 to 2024 Rush also worked as a researcher at Hugging Face, helping on early open-source LLM projects. Rush is a co-author of the paper that introduced Hugging Face's Transformers library and of the Zephyr alignment paper, wrote The Annotated Transformer (2018), and helped start the Conference on Language Modeling in 2024.1234
Work
TransformersPublished research
Co-author of the paper introducing Hugging Face's Transformers library (arXiv 2019; EMNLP 2020 demos), listed on Rush's homepage.31
Zephyr (external site: arxiv.org)Published research
Co-author of "Zephyr: Direct Distillation of LM Alignment" (2023; COLM 2024), on aligning a smaller chat model with distilled direct preference optimization.41
The Annotated TransformerPublished research
Sole author of The Annotated Transformer, presented at the ACL 2018 NLP-OSS workshop, per Rush's publication list.1
Other documented roles
Roles the sources document but that are not confirmed as current.
- Professor, Cornell University1
- Professor, Harvard University1
- Researcher, Hugging Face1
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