Did the usage of GPT-4 move prediction markets?

Probably it's impossible to distinguish the effect of the introduction of GPT-4 itself on the prediction markets, versus the usage of the GPT-4 technology to help make predictions which in turn affect those markets. But I thought I would ask anyway. I don't follow prediction markets.

If the answer is in any way 'yes' then I wonder another question is whether we will get an advance alert that something like GPT-5 has been trained by watching some signs on the prediction markets? Is it useful or is it like reading tea leaves or the 'technical analysis' of stock markets?