# How do I make ChatGPT show where each fact came from? > Ask ChatGPT to search the web and cite a source after every fact, mark anything unsourced, then open the citations yourself. Free 7-minute lesson. Source: https://learn.ynteractive.com/content/questions/how-to-make-chatgpt-show-its-sources · Updated 2026-10-21 · Free from Stepthrough (https://learn.ynteractive.com) By [Robert Breen](https://learn.ynteractive.com/content/about) · Published October 21, 2026 · Updated October 21, 2026 · 4 min read Ask ChatGPT to search the web and put a source after every fact, tell it to label anything it cannot source as "not verified", and then open the citations that matter and check that the page says the same thing. The free lesson [Catch Made-up Facts Before They Reach Customers](https://learn.ynteractive.com/content/how-to-fix-bad-chatgpt-answers-push-back-constraints-fact-check) shows the whole routine on a real draft, including the step most people skip: actually opening the link. Without a web search or a document to work from, ChatGPT answers from what it learned in training, and it cannot point to where a fact came from. Once it searches, the answer comes with small citation links after each point. Those links are what you check. ## What are the steps? 1. **Ask what it assumed.** If you already have a draft, ask ChatGPT to list every fact it assumed and every fact you should check. This finds the made-up parts fast. 2. **Ask it to search and cite.** For example: "Search the web and check these facts. Put a source link after each one. Use official or primary sources where possible. If you cannot find a source, say not verified." If your version shows a web search option in the **+** menu, turn it on. 3. **Look for one citation per claim.** A list of links at the bottom is weaker than a link after each sentence. Ask again if it bundles them. 4. **Open the citations for anything that matters.** Read the line on the page. Check the date too: an old page can be accurate and out of date. 5. **Check who wrote it.** A vendor's own page, a government site or the original study is better than a blog post that repeats a number. 6. **Put only checked facts in the final version.** Tell ChatGPT the checked fact and ask it to write using only the facts you give it. The posts on [how to stop ChatGPT making things up](https://learn.ynteractive.com/content/blog/stop-chatgpt-making-things-up) and [checking AI output before you use it](https://learn.ynteractive.com/content/blog/check-ai-output-before-you-use-it) go deeper on this habit. ## What does this look like in a real lesson? In [Catch Made-up Facts Before They Reach Customers](https://learn.ynteractive.com/content/how-to-fix-bad-chatgpt-answers-push-back-constraints-fact-check), a made-up bakery owner asks ChatGPT for a customer email about cake pickup, late pickups and freshness, but leaves out the facts. The draft invents a late pickup policy and says to enjoy the cake "within 2 to 3 days". You point at the exact problem, add constraints, then ask what it assumed. ChatGPT admits the freshness line and a refrigeration line were its own guesses. You give it the one fact it did not know (most cakes have cream cheese frosting) and ask it to check against sources. The new answer has citations, and you click the FoodSafety.gov one. The page says never to leave perishable food out of refrigeration for more than 2 hours, or 1 hour above 90°F. It matches, so that fact goes in the email. Every other fact came from the owner. ## What if the facts are in my own documents? Then you want a tool that answers only from your files and cites the passage. - **Gemini Notebook** (formerly [NotebookLM](https://learn.ynteractive.com/content/glossary/notebooklm)) answers from the sources you add and marks each fact with a numbered citation. In [the Gemini Notebook lesson](https://learn.ynteractive.com/content/notebooklm-gemini-notebook-cited-answers-briefing-doc) you add a cleaning contract PDF, a crew handbook from Drive and a services web page, ask what the contract requires, click citation 1 and see the passage highlighted in the contract. - **ChatGPT or Claude with an uploaded file** can do the same if you ask for the section or page number on every line. ## Which tools are built around citations? - **Perplexity** searches the web and cites sources in every answer, which suits quick fact-checks. - **Claude Research** runs many searches and writes a report with a citation on each claim. In [Research: a cited competitor price scan](https://learn.ynteractive.com/content/claude-research-tutorial), you open one competitor's source and find the prices are from March 2024, something the report did not say. - **ChatGPT deep research** writes longer cited reports for bigger questions. The glossary entry on [AI citations](https://learn.ynteractive.com/content/glossary/ai-citations) explains what a citation does and does not prove. ## What mistakes should I avoid? - **Treating a link as proof.** A citation only helps if you open it and it says the same thing. - **Ignoring dates.** Prices, rules and statistics change. Check when the page was written. - **Accepting second-hand sources.** Go to the original when a number matters. - **Asking for sources after the email is sent.** Check before anything reaches a customer. - **Letting it cite for things you told it.** Your own facts need no source. Keep them separate from the web facts. ## Key takeaways - Ask ChatGPT to search and put a source after every fact. - Have it mark anything it cannot source as not verified. - Open the citations that matter and read the actual line. - Use [Gemini](https://learn.ynteractive.com/content/glossary/gemini) Notebook or an uploaded file when the facts are in your own documents. - Only checked facts go into anything you send. ## Frequently asked questions **Why does ChatGPT sometimes give sources that do not exist?** Without a web search it can produce links that look real but are not. When it searches, the citations come from pages it opened, but you still need to check that the page says what the answer claims. **Does ChatGPT always search the web?** No. It decides for many questions, or you can ask it to search. If an answer has no citation links, it did not search for that answer. **Which is better for cited answers, ChatGPT or Perplexity?** Both cite sources when they search. [Perplexity](https://learn.ynteractive.com/content/glossary/perplexity) is built around search for quick lookups, and ChatGPT is handy when the cited fact goes straight into a draft you are already writing there. ## Learn it hands-on Free, interactive lessons: you do every step yourself in a practice copy of the real tool, it checks your work as you go, and nothing touches your real accounts. - [Catch Made-up Facts Before They Reach Customers using ChatGPT](https://learn.ynteractive.com/content/how-to-fix-bad-chatgpt-answers-push-back-constraints-fact-check): Leave gaps in a prompt and ChatGPT fills them: a stiff paragraph, a made-up policy and a made-up fact. Point at the exact problem, add constraints… (about 7 minutes) - [NotebookLM (Now Gemini Notebook): Cited Answers and a Briefing from Your Docs](https://learn.ynteractive.com/content/notebooklm-gemini-notebook-cited-answers-briefing-doc): Create a notebook, add a PDF, a Google Doc from Drive and a web page as sources, ask a question and check its citations, save the answer to a note… (about 7 minutes) - [Claude Research: Get a Cited Competitor Price Scan, Then Check It](https://learn.ynteractive.com/content/claude-research-tutorial): Turn on Research, have Claude check what nearby competitors charge, read the cited report, check a source and ask a follow-up. (about 7 minutes) [Start the free lesson](https://learn.ynteractive.com/modules/chatgpt-fix-bad-answers) ## AI tools in this answer Each one in the Stepthrough AI tools directory: what it does, who it is for and the free lesson where there is one. [ChatGPT](https://learn.ynteractive.com/content/ai-tools/tool/chatgpt) · [Gemini Notebook](https://learn.ynteractive.com/content/ai-tools/tool/notebooklm) · [Claude](https://learn.ynteractive.com/content/ai-tools/tool/claude) · [Perplexity](https://learn.ynteractive.com/content/ai-tools/tool/perplexity) [The full AI tools directory](https://learn.ynteractive.com/content/ai-tools) ## Related terms Plain-English definitions, each with an example from a free lesson. [NotebookLM](https://learn.ynteractive.com/content/glossary/notebooklm) · [Gemini](https://learn.ynteractive.com/content/glossary/gemini) · [Perplexity](https://learn.ynteractive.com/content/glossary/perplexity) · [AI sycophancy](https://learn.ynteractive.com/content/glossary/sycophancy) · [Hallucination check](https://learn.ynteractive.com/content/glossary/hallucination-check) · [Knowledge graph](https://learn.ynteractive.com/content/glossary/knowledge-graph) [The full AI glossary](https://learn.ynteractive.com/content/glossary) ## Related prompts - [Cited competitor price scan prompt](https://learn.ynteractive.com/content/prompts/cited-competitor-price-scan-prompt): A copy-ready Claude Research prompt that compares nearby competitors' published prices in a table, with a source for every… - [Change one fact, show what moved prompt](https://learn.ynteractive.com/content/prompts/change-one-fact-and-show-what-moved-prompt): A follow-up prompt for a ChatGPT chat that tells the AI one new fact, then asks it to redo the work and list exactly which… - [Employee incident report prompt](https://learn.ynteractive.com/content/prompts/employee-incident-report-prompt): A ChatGPT prompt for an employee incident report: turn HR notes into a factual write-up with who said what, the policy and next… [All free prompt templates](https://learn.ynteractive.com/content/prompts) ## Related questions - [Can I trust AI answers enough to use them at work?](https://learn.ynteractive.com/content/questions/can-i-trust-ai-answers-at-work): Trust AI for drafts you can check; verify every fact, number and promise before it reaches anyone. Sourced tools speed up… - [How do I use AI to research a topic and cite every source?](https://learn.ynteractive.com/content/questions/how-to-research-a-topic-with-ai-and-cite-sources): Turn on a research mode, write a brief that demands a source for every claim, approve the plan, then open the sources that… - [Which AI tool can answer questions across hundreds of company documents?](https://learn.ynteractive.com/content/questions/ai-search-across-company-documents): For a set of files, Gemini Notebook gives cited answers. For hundreds of documents across Drive and Slack, use Dust or Onyx… - [Can I do real work with only free AI tools?](https://learn.ynteractive.com/content/questions/can-free-ai-tools-do-real-work): Yes for everyday writing, summaries and small spreadsheet jobs. Free tiers hit limits on volume, agents and client data. See… - [What AI skills do employers want from office workers?](https://learn.ynteractive.com/content/questions/ai-skills-employers-want): Clear prompting, checking AI output, good judgment about data and knowing when to automate. What each skill looks like at work… - [Can AI do account reconciliations accurately enough to trust?](https://learn.ynteractive.com/content/questions/can-ai-do-account-reconciliations): AI can match rows and list exceptions fast, but you can trust it only after you check the exceptions and do the math yourself… [More questions: How do I...](https://learn.ynteractive.com/content/questions/how-do-i) · [All AI questions](https://learn.ynteractive.com/content/questions) · [All free tutorials](https://learn.ynteractive.com/content)