ChatGPT 5.5 Pro Demonstrates Advanced Mathematical Problem Solving Capabilities

May 9, 2026

AI Summary

Recent experiments with ChatGPT 5.5 Pro highlight its ability to tackle complex mathematical problems, including those in combinatorics and additive number theory. The model successfully improved upon existing research, suggesting that large language models are becoming increasingly adept at generating original mathematical insights.

ChatGPT 5.5 Pro was tested on mathematical problems from Mel Nathanson's paper on additive number theory.
The model produced a PhD-level research output in about an hour, demonstrating significant mathematical capabilities without human input.
It improved the upper bound on a specific mathematical problem from exponential to polynomial in a variable, showcasing its potential for original contributions.
The model's approach involved constructing sets with specific properties related to sumsets, utilizing known mathematical concepts such as Sidon sets and arithmetic progressions.
The results raised questions about how to categorize and publish AI-generated mathematical content, suggesting the need for a new repository for such work.
The experiments indicate that while LLMs can generate valuable insights, the nature of their contributions and the implications for academic publishing remain topics for further discussion.

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ChatGPT 5.5 Pro Demonstrates Advanced Mathematical Problem Solving Capabilities

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