ChatGPT says something wrong or outdated about my startup. How do I fix it?

First find where the error lives: in tracked cases most wrong brand facts come from a stale page the assistant is citing, not from the model itself. The fix sequence is capture evidence, correct the cited source, tighten the facts on your own site (including schema), get the pages recrawled, file in-product feedback, and re-test until the answer flips. Training-data errors are slower to fix, so also build a consistent public record (press, directories, Wikipedia if you genuinely qualify) that future model updates will learn from.