Thomas Wolf

Co-Founder & Chief Science Officer, Hugging Face (angel investor)

Reviewed Updated Jun 3, 2026

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Location Paris, France
Check Size Undisclosed (angel)
Last Verified Investment Qutwo (Angel) — May 6, 2026
Social @thomwolf.bsky.social LinkedIn
Stage Focus
pre-seed seed series-a
Sector Focus
ai machine-learning open-source robotics ai-for-science developer-tools

Background

Thomas Wolf is a co-founder and Chief Science Officer (CSO) of Hugging Face, the open-source AI platform he started in 2016 with Clément Delangue and Julien Chaumond 12. At Hugging Face he leads the open-source, open-science and robotics efforts, and he initiated and spearheaded the development of the Transformers and Datasets libraries that became foundational tools for the modern machine learning ecosystem 13.

Wolf holds a PhD in statistical and quantum physics from Pierre and Marie Curie University and is a graduate of École Polytechnique 14. Before Hugging Face, he qualified as a European Patent Attorney at Cabinet Plasseraud, where he advised deep-learning and machine-learning companies on IP and patent strategy; he had earlier worked as a research intern at Lawrence Berkeley National Laboratory on X-ray generation from laser-plasma accelerators 14. He is also the initiator and senior chair of the BigScience research collaboration 1.

Alongside his operating role at Hugging Face, Wolf is an active angel investor — primarily in AI, machine learning, robotics, and open-source/scientific-AI startups, with a concentration on French and European founders 56.

Stated Thesis

Wolf has not published a formal investment thesis. His public statements emphasize open-source infrastructure, democratization of AI tooling, and AI-for-science.

On open source as a core operating principle, he has said: “We think the most radical way is to say you share just everything. You share the data, you share the code, you share the recipe.” 7 He has also acknowledged this isn’t a religious position: “I don’t want to give the impression that I’m an open-source absolutist. I think both of them will generally coexist in AI.” 7

On what he hopes to see built, he describes his 10-year vision as “a world where basically everyone feels like they can build with AI and not just consume AI, but they feel like they can be an actor of this thing.” 8 For robotics specifically, he has said he would like to see “a galaxy of different form factors” rather than a humanoid-only future 8.

His public writing has been most pointed on AI for science. In his essay “The Einstein AI model,” responding to Dario Amodei’s “Machines of Loving Grace,” Wolf argues that scaled-up LLMs as currently built will produce “a country of yes-men on servers” rather than scientific revolutionaries — because the crucial skill of great scientists is asking new questions, not optimizing existing ones 9.

Inferred Thesis

Based on 10 verified angel investments drawn from press announcements (sample size is small; percentages below are counts, not estimates):

Stage: Predominantly pre-seed, seed, and pre-Series A / Series A angel checks. Of 10 verified rounds: 5 pre-seed/seed (Neuralk-AI, Alinia AI, Flowstep, Lovable seed precursor, AISLE), 3 Series A (Light, Umony, Rivan), 1 Pre-Series A (Lovable), 1 large angel/growth (Bioptimus, Qutwo) 10111213141516171819.

Sectors (10 verified): - AI infrastructure / foundation models / applied AI: 6 of 10 (Neuralk-AI tabular FM, Alinia AI safety, Lovable AI app builder, Bioptimus biology FM, Umony compliance AI, AISLE) — 60% - Robotics / hard tech / energy: 2 of 10 (Rivan synthetic gas; Qutwo quantum computing) — 20% - AI-native developer/design tools: 2 of 10 (Flowstep design, Light enterprise AI) — 20%

Geography (10 verified): Heavy European concentration consistent with Wolf’s Paris base. France: 3 (Neuralk-AI, Bioptimus, Lovable’s Swedish team but with strong French angel syndicate); Sweden: 1 (Lovable); Finland: 1 (Qutwo); UK: 2 (Umony, Rivan); Estonia: 1 (Flowstep); Spain: 1 (Alinia AI); other/global: 1 (AISLE) 10111213141516171819.

Co-investor patterns: Wolf often co-invests alongside other operator-angels rather than as a solo angel check. Recurring co-investors across the verified set include his Hugging Face co-founder Clément Delangue (Alinia AI 13), Charlie Songhurst (Lovable 11, Light 16), and operator-angels from European AI/fintech (Charles Gorintin of Alan, Philippe Corrot of Mirakl on Neuralk-AI 10; Matt Clifford of Entrepreneur First and Markus Villig of Bolt on Rivan 15; Xavier Niel and Ilkka Paananen on Qutwo 19). Institutional leads in his rounds skew European: Fly Ventures, Creandum, Cathay Innovation, Balderton Capital, Notion Capital, IQ Capital.

Founder profile patterns: Strong preference for technical founders building open-source-aligned, scientifically rigorous tools — especially foundation models targeting underserved data types or domains (tabular data, biology, quantum, robotics). This is consistent with his own statement on Neuralk-AI: he praised the team for “unlocking the untapped potential of tabular data” 10.

Notable gap vs. stated views: Wolf publicly emphasizes open-source and AI-for-science, and his portfolio reflects this in Bioptimus, Neuralk-AI, and Qutwo. But several of his bets (Lovable, Light, Umony) are closed-source commercial AI products, suggesting the open-source advocacy is a values commitment for Hugging Face rather than a hard filter for his personal checks.

Sample-size caveat: Aggregators report Wolf has made 25–34 total angel investments 56; the 10 rounds documented above are those independently confirmable from press announcements. Percentages above are computed on the verified subset and should be treated as directional, not definitive.

Portfolio

Company Year Stage Source
Lovable 2025-02 Pre-Series A (€14.3M, led by Creandum) 11
Neuralk-AI 2025-02-03 Seed ($4M, led by Fly Ventures) 1012
Alinia AI 2025 Pre-seed ($2.4M / €2.2M, led by Speedinvest & Precursor) 13
Flowstep 2025-06 Seed ($2.6M / €2.2M) 14
Bioptimus 2025-01-14 Funding round ($41M, led by Cathay Innovation; total raised to $76M) 17
Umony 2025-09-30 Series A ($15M, led by Notion Capital) — Wolf also joined the advisory board 18
Light 2025-09 Series A ($30M, led by Balderton Capital) 16
AISLE 2025-10-16 Angel round 5
Rivan 2026-04-20 $34M round led by IQ Capital 15
Qutwo 2026-05-06 €25M angel round (Helsinki, quantum) 19

Aggregator profiles list 25–34 total angel investments, indicating this table represents roughly one-third of his disclosed angel activity 56.

In Their Own Words

On open-source as a strategy: “We think the most radical way is to say you share just everything. You share the data, you share the code, you share the recipe.” — Thomas Wolf, Me, Myself, and AI podcast, MIT Sloan Management Review 7

On the limits of open-source absolutism: “I don’t want to give the impression that I’m an open-source absolutist. I think both of them will generally coexist in AI.” — Thomas Wolf, Me, Myself, and AI 7

On what current LLMs miss: “AI is very good at exploring many, many things around the status quo, but AI is extremely bad at challenging the status quo itself.” — Thomas Wolf, Me, Myself, and AI 7

On model behavior: “They tend to regress… They’re very good at average thinking… But they’re quite bad at really challenging the average.” — Thomas Wolf, Me, Myself, and AI 7

On the 10-year vision he is investing toward: “A world where basically everyone feels like they can build with AI and not just consume AI, but they feel like they can be an actor of this thing.” — Thomas Wolf, Training Data podcast, Sequoia Capital 8

On the future of robotics form factors: “I would like to see a galaxy of different form factors” — Thomas Wolf, Training Data podcast 8

On scientific AI (from his essay): Wolf argues that today’s frontier LLMs are producing “a country of yes-men on servers” rather than the “country of Einsteins” Anthropic’s Dario Amodei predicted, because they are optimized for “manifold filling” rather than asking novel questions 9.

On the Neuralk-AI investment: “Neuralk-AI’s foundation model is inspiring. They unlock the untapped potential of tabular data, working toward establishing new standards for extracting intelligent, actionable insights from structured datasets.” — Thomas Wolf, quoted in Neuralk-AI announcement coverage 10

What Founders Say

No independently sourced founder testimonials about working with Thomas Wolf as an angel investor were located during this research pass. Wolf’s investments are typically announced via the company’s funding press release rather than via founder retrospectives, and dedicated searches for founder quotes about his post-investment involvement did not surface verifiable statements.

Sources

  1. Sequoia Capital, “Thomas Wolf” founder page, accessed June 2026. https://sequoiacap.com/founder/thomas-wolf/↩↩↩↩↩

  2. VivaTech, “Thomas Wolf – Co-Founder & Chief Science Officer, Hugging Face,” speaker page, accessed June 2026. https://vivatech.com/speakers/ac427ef5-c808-f011-aaa7-6045bd9d3cdc↩

  3. London Tech Week, “Thomas Wolf, Co-Founder & Chief Science Officer, Hugging Face,” speaker page, accessed June 2026. https://londontechweek.com/speakers/thomas-wolf↩

  4. Thomas Wolf, LinkedIn profile, accessed June 2026. https://uk.linkedin.com/in/thom-wolf↩↩

  5. CB Insights, “Thomas Wolf — Portfolio Investments, Funds, Exits,” accessed June 2026. https://www.cbinsights.com/investor/thomas-wolf↩↩↩↩

  6. Tracxn, “Thomas Wolf — 2025 Portfolio & Founded Companies,” accessed June 2026. https://tracxn.com/d/people/thomas-wolf/__EOx3UNX75GRhSrqsaDZ-AyPPnto6Fwk12N56zAXTo1s↩↩↩

  7. MIT Sloan Management Review, “Challenging the Average With Open-Source AI: Hugging Face’s Thomas Wolf,” Me, Myself, and AI podcast, accessed June 2026. https://sloanreview.mit.edu/audio/challenging-the-average-with-open-source-ai-hugging-faces-thomas-wolf/↩↩↩↩↩↩

  8. Sequoia Capital, “Hugging Face’s Thomas Wolf on the ‘App Store’ for Robots,” Training Data podcast, accessed June 2026. https://sequoiacap.com/podcast/training-data-thomas-wolf/↩↩↩↩

  9. Thomas Wolf, “The Einstein AI model,” personal blog (thomwolf.io), accessed June 2026. https://thomwolf.io/blog/scientific-ai.html↩↩

  10. TechCrunch, “Neuralk-AI is developing AI models specifically designed for structured data,” February 3, 2025, accessed June 2026. https://techcrunch.com/2025/02/03/neuralk-ai-is-developing-ai-models-specifically-designed-for-structured-data/↩↩↩↩↩↩

  11. The SaaS News, “Lovable Raises €14.3M in Pre-Series A,” February 2025, accessed June 2026. https://www.thesaasnews.com/news/lovable-raises-14-3-million-in-pre-series-a↩↩↩↩

  12. Tech Funding News, “Meet Neuralk-AI: the first tabular foundation model for commerce grabbing $4M from Hugging Face co-founder and early 9fin investors,” accessed June 2026. https://techfundingnews.com/meet-neuralk-ai-the-first-tabular-foundation-model-for-commerce-grabbing-4m-from-hugging-face-co-founder-and-early-9fin-investors/↩↩↩

  13. The SaaS News, “Alinia AI Raises €2.2 Million in Pre-Seed Round,” accessed June 2026. https://www.thesaasnews.com/news/alinia-ai-raises-2-2-million-in-pre-seed-round↩↩↩↩

  14. Finsmes, “Flowstep Raises $2.6M in Seed Funding,” June 2025, accessed June 2026. https://www.finsmes.com/2025/06/flowstep-raises-2-6m-in-seed-funding.html↩↩↩

  15. Tech Funding News, “IQ Capital leads Rivan’s $34M raise to build Europe’s domestic synthetic gas supply,” April 2026, accessed June 2026. https://techfundingnews.com/rivan-34m-synthetic-gas-europe-energy-security/↩↩↩↩

  16. The SaaS News, “Light Raises $30 Million in Series A,” September 2025, accessed June 2026. https://www.thesaasnews.com/news/light-raises-30-million-in-series-a/↩↩↩↩

  17. Bioptimus, “Bioptimus hits $76M funding milestone and prepares to launch groundbreaking foundation model for biology,” January 14, 2025, accessed June 2026. https://www.bioptimus.com/news/bioptimus-hits-76m-funding↩↩↩

  18. GlobeNewswire / Umony press release, “Umony Assembles Powerhouse Advisory Board with Former FCA Chief, Hugging Face Co-Founder and Regulation Luminaries,” September 30, 2025, accessed June 2026. https://www.globenewswire.com/news-release/2025/09/30/3158313/0/en/Umony-Assembles-Powerhouse-Advisory-Board-with-Former-FCA-Chief-Hugging-Face-Co-Founder-and-Regulation-Luminaries.html↩↩↩

  19. Sifted, “Silo founder raises €25m for ‘Palantir of quantum computing’,” May 2026, accessed June 2026. https://sifted.eu/articles/qutwo-hugging-face-legora-funding-round↩↩↩↩