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In a groundbreaking move, OpenAI claims its reasoning model has disproved a long-standing geometry conjecture from 1946, this time with the backing of mathematicians who previously exposed its errors.
OpenAI is making waves again, but this time it's not just about generating text or images. The company claims to have used its AI model to disprove a geometry conjecture that has stumped mathematicians for over eight decades. This isn't just another flashy announcement; the proof has been vetted and validated by the very mathematicians who previously exposed flaws in OpenAI’s earlier attempts.
The conjecture, known as the "Hadwiger-Nelson problem," dates back to 1946. It asks how many colors are needed to color the plane such that no two points exactly one unit apart share the same color. The problem has been a challenge for mathematicians due to its complexity and the sheer number of possible configurations.
OpenAI's AI model, dubbed "Reasoner-8," leverages advanced machine learning techniques to explore these configurations in ways humans can't. Here’s what changed:
The architecture of Reasoner-8 is particularly noteworthy. It consists of:

The model was trained using a large dataset of previously attempted colorings and their outcomes. This training helps the model learn patterns and make more informed decisions during its search.
OpenAI's success with Reasoner-8 marks a significant milestone in the application of AI to complex mathematical problems. Here are the key takeaways:
This development not only showcases the power of AI in tackling complex problems but also underscores the importance of interdisciplinary collaboration in advancing scientific knowledge.
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OpenAI claims it solved an 80-year-old math problem — for real this time | TechCrunch
↗ https://techcrunch.com/2026/05/20/openai-claims-it-solved-an-80-year-old-math-problem-for-real-this-time
Google Search as you know it is over - TechCrunch
↗ https://techcrunch.com/2026/05/19/google-search-as-you-know-it-is-over
About the author
Kai built ML infrastructure at a Bay Area startup before developing an obsession with transformer architectures and inference optimisation that eventually pulled him out of product work entirely. A stint at a compute research lab sharpened his instinct for what actually matters in a model release versus what is marketing. He writes from the inside — from the perspective of someone who has debugged the systems he is describing at three in the morning. He is allergic to hype and instinctively drawn to the unglamorous plumbing questions that everyone else skips over.
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22 May 2026
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