I can't find the actual picks that this LLM made, are they listed anywhere? As squirrelmaster commented [1], would be very worthwhile to see how this picked in regards to the (betting) markets: against-the-spread (ATS) and the money-line.
The spread is designed to make the bet a 50/50 so it would need to take into other factors or compute it’s spread to determine if there is an edge on Vegas.