Can an AI tool review a completed tax return PDF against source documents to catch missed items or errors, like an AI reviewer?

One member described a tool (primarily marketed for tax research) that, when asked directly, confirmed it can accept an uploaded source document and an uploaded tax return PDF, compare the two, and flag things like mistyped entries, missed items, or numbers that don't add up. The member had not yet tested this themselves — a free trial was coming up in a couple of weeks — so the capability was described secondhand from a vendor demo, not from hands-on use.