Check AI answers before you rely on them

AI assistants write well, quickly and in any tone you like. That is useful, and it is also the problem. A fluent answer feels trustworthy, and some of those answers are wrong: a wrong date, an invented rule, a quotation nobody said. If you build work on them without checking, the mistake becomes yours.

Using AI well is mostly a habit of checking. It is not hard, and it takes less time than doing everything by hand. The routine below shows how to check AI answers quickly, and which ones always need a human.

Know why answers go wrong

Understanding the causes helps you spot the risk.

1. It guesses. An assistant predicts likely words. When it does not know, it can still produce something plausible.
2. Its knowledge has an end date. It may not know recent events, prices, laws or changes.
3. It lacks your context. It does not know your customers, contracts or agreements, unless you give them.
4. It can misread your documents, especially long, scanned or badly formatted ones.
5. Your question may be ambiguous, and it will answer one reading without telling you.
6. It tends to agree. If your question assumes something false, it may go along with it.

None of this makes it useless. It means you treat the output as a draft from a quick colleague who sometimes bluffs.

Ask it to answer from your documents

The safest way to get a factual answer about your business is to base it on your own documents. Put the contract, the price list or the policy in a library and ask the assistant to answer from them. An answer tied to a page lets you open that page and read the exact words.

If the assistant says the documents do not contain the answer, that is a good result, not a failure. It is better than a guess.

Use sources, then read them

Where an answer comes with sources, use them. Click through and check:

• Does the source exist, and is it the right one?
• Does it say what the answer claims, or something near it?
• Is it recent enough, and from a reliable place?
• Does the quoted passage keep its meaning in context?

It is common for an answer to be roughly right but with one detail changed. The check is to find the sentence in the source and compare it to the claim. For web answers, prefer original sources, such as an official page, over summaries of summaries.

Know what to double check

Not everything needs the same care. Verify the things where an error costs the most:

• Numbers. Prices, totals, percentages, dates, dosages, dimensions.
• Names and titles, of people, companies and products.
• Legal and tax statements. Rules vary by place and change over time.
• Quotations and citations. Make sure the person said it and the source exists.
• Anything about safety, health or money.
• Claims that sound too neat. A very specific statistic with no source is a warning sign.

For low stakes text, such as a friendly reminder, a light read is enough.

Ask the assistant to help you check

You can use the assistant on its own output, carefully:

• "Which parts of this answer come from the documents, and which are your own knowledge?"
• "List each factual claim in your draft and the source for each."
• "What would need to be true for this to be wrong?"
• "Where are you least sure?"

These do not replace your own reading, but they often surface weak points. Treat its "I am sure" with caution.

Test with a case you know

When you start using AI for a task, try it on a case where you already know the answer. Check ten of them. You will learn where it is strong and where it slips, which is more useful than any general advice. Repeat the test when you switch to a different model, since they differ in care and style. Our post on choosing an AI model for the job explains how to think about it.

Keep a human in charge of decisions

AI can draft, summarise, search, compare and suggest. A person decides, signs and sends. For anything that affects a customer, an employee, a contract, a payment or a person's rights, a human reads it first and takes responsibility. If a decision about a person is involved, a person must make it, and the person affected should be able to ask why.

Never send an AI draft to a customer unread. Never paste in confidential or personal data unless you know how it is handled. Our post on keeping your data in the EU covers what to ask.

Create team habits

A few simple rules, written on one page, protect a team:

1. Say when text was drafted with AI if it matters to the reader.
2. Check every number and name before it leaves the building.
3. For facts about our business, use our documents.
4. Keep the sources with the output.
5. When in doubt, ask a person who knows.

Encourage people to report when AI gets something wrong, so the team learns where the risks are.

Where nerix helps

In the chat, nerix answers from your own documents and from the web, with the sources shown, so you can open the page each sentence came from. Your documents live in the library, where you control what is there. You can choose among several models for different jobs, a quicker one for light tasks and a more careful one for work that matters.

nerix can still be wrong. The sources are there so you can check, and the final decision is yours.

The short version

Treat AI output as a draft. Base factual answers on your own documents and read the sources. Verify numbers, names, legal points and quotes. Test on cases you know, and keep a person responsible for every decision.