OpenAI’s latest model, GPT-5.6 Sol Pro, has successfully disproved a 30-year-old conjecture related to the Benjamini-Hochberg method in statistics, achieving in roughly 90 minutes what both humans and its predecessor GPT-5.5 could not. According to The Decoder, a University of Pennsylvania statistics professor utilized GPT-5.6 Sol Pro to resolve this central open problem.

Notably, GPT-5.5 was unable to find a solution even after 20 hours of effort, highlighting the significant advancement in capability represented by the newer model. This breakthrough demonstrates the growing potential of advanced AI systems to tackle complex mathematical and statistical challenges that have remained unresolved for decades.

For Japanese investors and market participants, this development signals accelerating AI-driven innovation that could influence quantitative analysis and risk management strategies in FX, crypto, and equities markets.