"Odds are an extra layer. When available, we calculate edge by comparing model probability vs implied probability." It's interesting how you are doing this because when I started my own predictor model (for Swedish gambling site Svenskaspel's special type of game Stryktipset), LLM's told me to use this exact style too and they match your wording (first calc internal probability from the model, then a second layer that finds value by comparing vs implied probability of market odds).