Lewis Tunstall

OSINT Profile

Lewis Tunstall is a Hugging Face engineer, co-author of O'Reilly's 'Natural Language Processing with Transformers' and lead of the community's RLHF and fine-tuning playbooks (Hugging Face RLHF course, Ultrafeedback). NVIDIA agreed to acquire Hugging Face for ~$12.9B on 2026-09-03 ($11.9B to shareholders + up to $1B equity retention for HF employees joining NVIDIA; HF to remain an open platform; expected close H1 2027 pending regulatory approvals; antitrust runway + GPU-neutrality of the Hub are the live radar questions). Listed in Hugging Face's public organization directory (187 members, retrieved 2026-09-04); named at the HF All Hands where the deal was announced.

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