Lewis Tunstall
Hugging Face research engineer, lead author of the O'Reilly NLP-with-Transformers book, and co-creator of Zephyr/OpenHermes-style aligned open models.
- Role
- engineer
- Currently at
- Hugging Face
- twitter.com/_lewtun
- GitHub
- github.com/lewtun
- Scholar
- scholar.google.com/citations
- Papers
- 8
Cite
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Authored papers
8SmolVLM: Redefining small and efficient multimodal models
arXiv 2025
Kimina-Prover Preview: Towards Large Formal Reasoning Models with Reinforcement Learning
arXiv 2025
NuminaMath: The Largest Public Dataset in AI4Maths with 860k Pairs of Competition Math Problems and Solutions
blog
The N+ Implementation Details of RLHF with PPO: A Case Study on TL;DR Summarization
arXiv 2024
Efficient Few-Shot Learning Without Prompts
arXiv 2022
Evaluate & Evaluation on the Hub: Better Best Practices for Data and Model Measurements
arXiv 2022
Datasets: A Community Library for Natural Language Processing
EMNLP (ACL) 2021 11
RAFT: A Real-World Few-Shot Text Classification Benchmark
arXiv 2021
Tool contributions
1Affiliations
Frequent co-authors
10from 8 papers
Abhishek Thakur
Thomas Wolf
chief-science-officer
Alexander M. Rush
Jia Li
researcher
Julien Chaumond
founder
Kashif Rasul
researcher
Leandro von Werra
Longhui Yu
researcher
Mario Šaško
Quentin Lhoest