How to check an AI answer before trusting it

Check claims, not confidence

Break an answer into statements you could verify. “The hotel is a good fit” is a judgment. “Breakfast is included,” “the room has two beds,” and “cancellation is free until Friday” are separate factual claims. One correct statement does not establish the others. Make a small table of claim, evidence, date, and unresolved question.

For a document-based task, compare each important statement with the original document. For a current schedule, read the operator's page. For a scientific claim, distinguish an individual study from a body of evidence. For a product, consult the documentation for the actual plan and version rather than an old review.

Follow a citation all the way

An AI answer may cite a real page that does not support the sentence beside it. It may also blend several sources into a stronger claim than any source makes. Read enough surrounding text to understand qualifications. A study about a narrow task does not prove that a tool improves every kind of work.

If a citation does not open, search its exact title and author. If you cannot find it, mark the claim unresolved. Do not allow a plausible-looking reference to carry the same weight as a source you have inspected. A search snippet can be helpful for discovery but may omit the decisive exception.

A five-minute verification exercise

Choose a short AI-generated comparison of two fictional supplier quotes. Underline every number and deadline. Check whether taxes, delivery, installation, and optional items are treated consistently. Recalculate the total separately. Finally, ask whether one omitted condition would change which quote you prefer.

Extract the factual claims in your previous answer. For each, identify the supporting source or mark it unsupported. Separate your interpretation from the source's actual statement. Do not invent a citation to fill a gap.

This request helps organize checking; the assistant's response still needs inspection. It is particularly helpful for revealing assumptions that disappeared inside polished prose.

Use uncertainty constructively

An honest “I could not establish this” is a useful result. Decide whether the unknown blocks the task. Missing restaurant parking information may warrant a phone call. Missing evidence for a health or financial recommendation may mean the answer is unsuitable for acting on.

Save the verified result with its sources and date. Recheck facts that can expire before you use them. For generated files or bookings, inspect the actual artifact or confirmation rather than relying on a statement in chat. The amount of checking should match the consequence of being wrong.