ChatGPT calculation of exponents is wrong. (8/3)^(1/0.3) is equal to 26.296. ChatGPT is returning 93.5. It also claims (8/3)^0.3 is 26.296.
Have you just discovered this revelation? It’s obvious that GPT isn’t as good in math as you may think. He make mistakes and it’s because (but not only) that GPT is non-deterministic.
BTW. ChatGPT nowadays is a somewhat broad term, why you didn’t write which model you used?
Try the o1-preview.