Lewis Tunstall

Co-author of 'NLP with Transformers'; RLHF & fine-tuning lead, Hugging Face

📍 New York, USA — Hugging Face HQ (individual location not publicly verified)

HIGH CONFIDENCEVERIFIED

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.

Public Relation Edge (do not over-claim)

Hugging Face — Co-author of 'NLP with Transformers'; RLHF & fine-tuning lead, Hugging Face (engineering)NVIDIA — Acquirer in the ~$12.9B deal (ma_event)hf-nvidia-ma-2026 — Named at the HF All Hands (2026-09-03) (event)Hugging Face — Engineering — RLHF & fine-tuning (professional)Edward Beeching — RLHF research peers (professional)

Public OpCo / HoldCo Nodes

Only public nodes listed.

🗺 $UM-Radar GIS OSINT Map

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Public sources:

✓ https://huggingface.co/api/organizations/huggingface/members

✓ https://huggingface.co/lewtun

✓ https://rlhfbook.com

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