---
title: "Second mathematician accuses OpenAI of undisclosed use of his work"
url: https://www.parallelquant.com/posts/second-mathematician-accuses-openai-of-undisclosed-use-of-his-work-a3d915
source_name: "The Verge"
source_url: https://www.theverge.com/ai-artificial-intelligence/993263/where-does-openai-get-mathematics-training-data
published: 2026-09-10T11:00:57.000Z
topics: []
publisher: "Parallel Quant"
---

# Second mathematician accuses OpenAI of undisclosed use of his work

*2026-09-10 · Source: [The Verge](https://www.theverge.com/ai-artificial-intelligence/993263/where-does-openai-get-mathematics-training-data)*

Mathematician Andreas Thom said on Mastodon that interactions he and colleagues had with ChatGPT before OpenAI's recent math announcements may have fed into the results without proper disclosure. He is the second mathematician in days to raise transparency concerns about the training data behind OpenAI's math claims.

**Why it matters:** A second independent accusation in the same week turns this from an isolated dispute into a pattern, raising real questions about how OpenAI sources training data for headline-grabbing capability claims. It also highlights a recurring risk: researchers can unknowingly feed their unpublished work into AI training simply by using the tools professionally.

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Read the original: https://www.theverge.com/ai-artificial-intelligence/993263/where-does-openai-get-mathematics-training-data
Canonical: https://www.parallelquant.com/posts/second-mathematician-accuses-openai-of-undisclosed-use-of-his-work-a3d915
Published by Parallel Quant — https://www.parallelquant.com