How do I know if an answer from AI is correct?

AI chatbots write in a confident, fluent style whether they are right or wrong. That makes it hard to tell a correct answer from a mistaken one just by reading it. The good news is that a few simple habits make checking quick and reliable.

First, decide how much accuracy matters. If you asked for birthday party ideas, a wrong suggestion costs nothing. If you asked about tax deadlines, medicine doses, legal rights or exam facts, a wrong answer can cost a lot. Spend your checking effort where the stakes are high.

Watch for warning signs:

Very precise numbers, dates or statistics with no source.
Names of studies, books, court cases or websites that you have never heard of.
Quotes attributed to famous people.
Information about recent events or current prices.
Answers that change when you ask the same question again.
Answers that seem too convenient or exactly what you hoped to hear.

Then use these checks:

1. Ask for sources. Use an assistant with web search and click the links to confirm the information is actually there.
2. Check official sources. For government rules, use official websites. For health, consult reliable medical sources or a doctor. For law, consult the actual act or a lawyer.
3. Ask the AI to double-check. Questions like "How confident are you about this?" or "What might be wrong in this answer?" sometimes reveal uncertainty. This is helpful, but not a substitute for external checking.
4. Cross-check with another tool. Ask a different assistant or search engine. If they disagree, dig deeper.
5. Test with what you know. Ask something you already know the answer to about the same topic. If it gets that wrong, be more careful with the rest.
6. Check the logic. For maths or reasoning, follow the steps yourself or ask for step-by-step working.
7. Check dates. Make sure information has not changed since the AI's knowledge was last updated.

You can also reduce errors at the start. Provide the source material yourself, such as a PDF or webpage text, and ask the AI to answer only from it. Grounded answers are far more reliable.

The healthy mindset is to treat AI like a smart, well-read friend who sometimes misremembers details. Use it to learn and draft quickly, and verify the important parts before you rely on them.