Claude solves a physics equation that had never been solved before.

Claude Fable 5.1 solved a theoretical physics problem for me. I asked him to calculate a ninth order amplitude in N=4 super Yang-Mills theory. Usually people only compute up to second, third, fourth, or fifth order. It took him a few days to write some Python code with the SymPy library. He gave me two answers and I checked with Lance Dixon, a physicist at SLAC who confirmed that both answers were correct. It cost me anywhere from one to two thousand dollars worth of computing (which is roughly equivalent to a week of CPU time on 96 cores).

When I want to do something really hard, I do it myself with Fable 5.1. It’s not so much that he solved a new problem (although he did), but rather that he got checked by a physicist before I believed him. Without the check, I would never trust a pretty answer from a smart person.