How to check sources and citations in AI answers
Checking an AI citation means opening the reference and verifying what it actually supports. An address or a familiar organization name is not a substitute for reading it.
The aim of this workflow is a short trail from each important claim to accessible evidence. You can use it for a report, study material or an editorial assignment.
1. Separate verifiable claims
Extract numbers, dates, statements attributed to people and technical explanations that affect the conclusion. Do not begin by trying to review every word in the text.
One sentence may contain multiple claims. “The feature launched in May and is available in every country” requires checking the date and availability separately.
2. Open the reference outside the chat
Check whether the page exists and whether its title matches the description in the answer. An address redirecting to a homepage may not provide the evidence you need.
Look for the author, responsible organization and date as well. For current information, distinguish the publication date from the date when the event happened.
3. Find the supporting passage
Read the relevant section rather than only a search snippet. Check whether the source describes a general rule, an exception or a case restricted to a particular product.
Anthropic’s guidance on hallucinations includes checking claims and references. That does not remove the need to read the material yourself.
4. Use a simple verification table
Record the outcome in terms that let you resume the check later. Avoid a single “right or wrong” column when the available evidence is incomplete.
| Claim | Source examined | Status |
|---|---|---|
| Launch date | Original announcement | Supported by the identified passage |
| Coverage in every country | Availability page | Unsupported generalization |
| Current price | Official pricing table | Plan and currency need checking |
This fictional example shows how a partly correct answer can still require specific corrections.
5. Request a narrowly scoped review
Once you have collected sources, provide only the necessary passages and ask the AI to connect each conclusion to that material. Keep your instructions separate from the text of the pages.
Review the claims below using only the supplied passages.
For each one, classify it as supported, contradicted or not found.
Identify the passage supporting that classification.
Do not use a source to claim something it does not say.
Make gaps explicit; do not invent links or citations.This request organizes the comparison, but automatic classification can also be wrong. Make the final check directly in the references supporting the decision.
6. Use only claims you can support
Correct generalizations and identify what remains unconfirmed. If information is unnecessary, removing it may be better than keeping an appearance of precision.
Save the URL, passage and consultation date to simplify later updates. A concise record is often more useful than a long list of links unrelated to the text.
For structuring the original request, see how to give AI context and criteria.
Frequently asked questions
Does an existing link prove a claim?
No. The page must support the specific claim in the relevant context and time period.
Does asking for sources prevent fabricated citations?
No. Open the reference and check its title, author, date and the passage that would support the information.
How should I record an unsupported claim?
Mark it as unverified and remove it from the conclusion, or find an appropriate primary source before using it.