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Mathematicians want proof OpenAI didn’t use their work

AnnouncementResearchSep 10, 2026

Mathematician Andreas Thom accused OpenAI of dishonesty and a lack of transparency about whether his prior ChatGPT interactions entered its training data, following the company's non-sofic groups result that built on work by Thom and Gábor Kun. Thom's concerns echo those of New York University professor Tristan Buckmaster, who questioned whether OpenAI's Codex benefited from his unpublished work. Thom says only OpenAI can prove whether user data was used, calling undisclosed use ethically indefensible.

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Evidence

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Citation chain · 1 source

OpenAICompanyChatGPTModelCodexModelTristan BuckmasterPersonNew York UniversityCompanyAndreas ThomPersonGábor KunPerson
Canonical: https://www.theverge.com/ai-artificial-intelligence/993263/where-does-openai-get-mathematics-training-data