Within Hallucinations

How to check AI answers before trusting them

AI-generated text is often good enough to be useful and polished enough to be dangerous. The central lesson from research on AI hallucinations is not that AI answers should never be used, but that they should be treated as drafts rather than finished work.

On this page

  • Claims that deserve extra scrutiny
  • How to verify citations and precise details
  • When to ask for uncertainty or human review
Preview for How to check AI answers before trusting them

Introduction

A practical verification process does not require checking every sentence. It requires identifying which parts of an answer would cause harm, embarrassment, financial loss, legal problems, or misinformation if they turned out to be incorrect.

Checklists illustration 1

Claims That Deserve Extra Scrutiny

Not every statement in an AI answer carries the same level of risk. A sensible review process focuses first on details that are frequently hallucinated or especially costly to get wrong.

The following categories deserve mandatory verification before publication:

  • Statistics and numerical claims: percentages, survey results, market sizes, medical outcomes, budgets, and performance figures.
  • Dates and timelines: launch dates, historical events, policy changes, and deadlines.
  • Quotations: direct quotes should always be traced to an original source.
  • Named sources and references: articles, books, court cases, studies, regulations, and reports.
  • Technical or scientific claims: especially when they involve safety, health, engineering, or compliance.
  • Predictions and forecasts: AI systems often present speculative information in a factual tone.
  • Claims about people or organisations: reputational harm can result from repeating inaccurate statements.

A useful rule is simple: the more precise the claim, the more likely it needs verification. Broad summaries may be substantially correct while individual details within them are not.

For example, an AI-generated explanation of a scientific topic may accurately describe the general concept but invent a supporting statistic or misattribute a finding to the wrong study. The polished writing can make those errors difficult to spot without deliberate checking. [Stony Brook University Libraries]guides.library.stonybrook.eduStony Brook University Libraries Critical Perspectives on AIJeremy Hsu, "AI Hallucinations Are Getting Worse – And They're Here to Stay," New Scientist, May 9…Read more…

How to Verify Citations and Precise Details

One of the most important checks is determining whether cited sources actually exist and support the claim being made.

Never trust a citation because it looks professional

Large language models sometimes generate realistic-looking references that are entirely fictional. A well-known example occurred in the 2023 legal case Mata v. Avianca, where attorneys submitted court filings containing non-existent cases generated by ChatGPT. The court found that the cited authorities were fabricated and imposed sanctions. The case became a widely cited warning about relying on AI-generated references without verification. Justia Law+2Association of Corporate Counsel (ACC) [law.justia.com]law.justia.comLaw Mata vAvianca, Inc., No. 1:2022cv01461 - Document 54 (S.D.N.Y….June 22, 2023 — 2023 Court Description: OPINION AND ORDER ON SANCTIONS: judge…Published: June 22, 2023

Before reusing a citation:

  1. Search for the source independently.
  2. Confirm that the publication exists.
  3. Confirm that the author exists.
  4. Open the original source rather than relying on an AI summary.
  5. Verify that the cited source actually supports the statement.

A reference that exists is not automatically a valid reference. AI systems sometimes attach genuine sources to claims those sources never made.

Check numbers against primary sources

If an AI answer includes numerical claims, locate the original dataset, report, or official publication whenever possible.

For example:

  • Government statistics should be checked against government publications.
  • Academic findings should be checked against the paper itself rather than secondary summaries.
  • Company figures should be checked against official reports, filings, or announcements.

A single incorrect number can undermine confidence in an otherwise accurate document.

Common warning signs include:

  • Broken links.
  • Incorrect publication dates.
  • Mismatched author names.
  • Articles that cannot be found in reputable databases.
  • Citations that appear only in AI-generated content.

If locating a source requires unusual effort, assume it may be incorrect until independently confirmed.

Checklists illustration 2

A Practical Publication Checklist

Before publishing AI-assisted content, run through a short review process.

Step 1: Highlight factual claims

Mark statements that make factual assertions rather than offering opinions or general explanations.

Step 2: Identify high-impact claims

Ask which errors would create the greatest consequences if wrong.

Step 3: Verify independently

Use trusted sources to confirm important facts. Ideally, verify using sources that were not suggested by the AI system itself.

Step 4: Check consistency

Look for contradictions between different parts of the text. AI-generated answers can sometimes contain internally inconsistent details.

Step 5: Review citations

Confirm that every cited source exists and supports the associated claim.

Step 6: Confirm dates and numbers

These are among the most common areas where errors survive into final publication.

Step 7: Remove unsupported certainty

Replace overconfident wording with more accurate language when evidence is limited.

Step 8: Conduct a final human read-through

Read the document as if it were written by an unknown contributor rather than by a trusted assistant.

This process resembles editorial review rather than technical auditing. The goal is not perfection but reducing the risk of publishing confident mistakes.

When to Ask for Uncertainty or Human Review

Many verification problems can be reduced before publication by asking the AI system to expose uncertainty.

Instead of accepting an answer as delivered, users can ask:

  • Which claims are least certain?
  • Which statements require independent verification?
  • What evidence supports this conclusion?
  • Are there competing interpretations?
  • Which parts are based on inference rather than direct evidence?

These questions do not guarantee accuracy, but they can reveal where additional scrutiny is needed.

Human review becomes particularly important in high-stakes contexts such as healthcare, law, finance, engineering, public policy, and academic research. NIST’s AI risk-management guidance emphasises verification, validation, testing, and human oversight throughout the AI lifecycle rather than relying solely on model outputs. [NIST Publications+2NIST Publications]nvlpubs.nist.govai.100 1NIST PublicationsArtificial Intelligence Risk Management Framework (AI RMF 1.0)by N AI · 2023 · Cited by 191 — The NIST modification high…

UNESCO’s guidance on generative AI similarly stresses human agency, oversight, and fact-checking as safeguards against inaccurate or misleading outputs. [UNESCO+2UCL Discovery]unesco.orgguidance generative ai education and researchGuidance for generative AI in education and research7 Sept 2023 — UNESCO's first global guidance on GenAI in education aims to supp…

A useful threshold is this: if a mistake would require a correction notice, create legal exposure, affect someone’s wellbeing, influence a significant decision, or damage credibility, a knowledgeable human reviewer should inspect the content before publication.

Checklists illustration 3

Why Verification Remains Necessary Even as AI Improves

Verification is not merely a temporary workaround for early AI systems. Researchers and industry experts continue to treat hallucinations as a persistent challenge because language models generate text probabilistically rather than by guaranteeing factual correctness. Although techniques such as retrieval-augmented generation (RAG), source grounding, and automated checking can reduce errors, they do not eliminate them entirely. [IT Convergence+2IntechOpen]itconvergence.comhow to overcome ai hallucinations using retrieval augmented generationIT ConvergenceHow to Prevent AI Hallucinations with Retrieval Augmented…11 Sept 2024 — Retrieval-augmented generation (RAG) is an effe…

Studies of specialised AI tools have reached similar conclusions. Systems designed for professional domains often reduce hallucination rates but can still produce incorrect citations, unsupported conclusions, or fabricated details. Verification therefore remains a human responsibility even when the tools become more accurate. [arXiv]arxiv.orgHallucination-Free? Assessing the Reliability of Leading AI Legal Research ToolsMay 30, 2024…Published: May 30, 2024

The practical mindset is straightforward: treat AI as a capable drafting assistant, not as a final authority. The most reliable workflow combines AI’s speed with human verification of facts, sources, and uncertainty. That approach captures much of the productivity benefit while reducing the risk of publishing plausible but incorrect information.

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Endnotes

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    Link: https://nvlpubs.nist.gov/nistpubs/ai/NIST.AI.600-1.pdf
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    Avianca, Inc., No. 1:2022cv01461 - Document 54 (S.D.N.Y....June 22, 2023 — 2023 Court Description: OPINION AND ORDER ON SANCTIONS: judge...

    Published: June 22, 2023

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    AviancaAugust 8, 2023 — The recent story of two New York attorneys “duped” by ChatGPT into citing “fake” cases in a court submission— and...

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    UNESCO in the UKGuidance for generative AI in education and researchThe publication offers concrete recommendations for policy-makers and...

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Additional References

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    These errors arise from the probabilistic way the models predict the next word in a sentence, sometimes leading to plausible yet incorrec...

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    Guidance for Generative AI in Education and ResearchThis UNESCO publication offers global guidance on the ethical and effective use of ge...

  4. Source: instagram.com
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    Juan Mata (@juanmatagarcia) • Instagram photos and videosI'm joining San Diego FC ownership group! Really happy to announce that I'm a pa...

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    Lawyer faces sanctions for using 'bogus' citations from ChatGPTMay 29, 2023 — Schwartz was acting for airline passenger Roberto Mata in a...

    Published: May 29, 2023

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    NIST Generative AI Profile ExplainedGenerative AI poses new sources of risk that are not covered by traditional AI governance. Some of th...

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    Avianca, Inc. became a cautionary tale about the dangers of blindly trusting AI-generated content, resulting in significant...Read more...

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