That is not the narrative given in the OpenAI announcement. They claim to have started working on it after "we heard rumors that two Millennium Prize problems h

That is not the narrative given in the OpenAI announcement. They claim to have started working on it after "we heard rumors that two Millennium Prize problems had been resolved", on September 1st, that "we later realized was related to Levent Alpöge" on Sepetember 6th "After the completion of our full project and lean verification" That does stretch the reader's credulity. I think most people find it far more likely the rumor was related to Anthropic all along.