Use AI to Summarise Text Without Losing the Important Details

A summary should make a text easier to understand while preserving its important meaning. It should not simply make the text shorter at any cost.

AI can help produce a first draft of a summary. Your instructions and review determine whether that draft is useful. A smooth paragraph can still leave out a condition that changes the message.

Before summarising, decide what the reader needs to know.

Give the summary a purpose

“Summarise this” leaves several questions open. Should the result explain the main argument, list decisions or tell someone what to do next?

A clearer request is:

Summarise this notice for a volunteer who needs to know what changed and whether they must take action. Preserve dates, exceptions and anything that is not yet confirmed.

You have now described the reader and the details that matter.

Keep the source text separate from your instructions

Use a label such as “Source text” before pasting the material. This makes the boundary easier to follow and gives you a clear reference when reviewing the answer.

Only provide material you are allowed to share with the AI service. For practice, use fictional text rather than a private email or an internal document.

Work through a small example

Here is a fictional notice:

From Monday, the community hall will open at 9 am instead of 8 am. Saturday hours will not change. Existing bookings before 9 am will still be honoured. The arrangement will be reviewed after four weeks, but no further change has been confirmed.

An incomplete summary might say:

The hall now opens at 9 am.

That is shorter, but it loses the start date, Saturday exception, existing-booking condition and uncertainty about future arrangements.

A more useful summary is:

From Monday, the hall opens at 9 am instead of 8 am, except on Saturdays. Existing bookings before 9 am remain valid. The arrangement will be reviewed after four weeks; no further change is confirmed.

Check the words that change meaning

Pay special attention to words such as “may,” “must,” “only,” “unless” and “not.” They can carry more meaning than a long descriptive sentence.

For example, “members may register early” is different from “members must register early.” A summary should not strengthen a suggestion into a requirement.

Also check names, numbers, dates and who is responsible for an action. These are easy to overlook when the overall paragraph sounds right.

Ask for a traceable structure

For more complicated material, request separate sections for Main points, Actions and Open questions. You can also ask the assistant to identify the source passage supporting each important point.

That makes checking easier, but you should still compare the passages with the original text. A quoted passage must actually be present and relevant.

Try it yourself

Summarise this notice in two sentences:

The book swap is on Sunday at 2 pm. Entry is free. People may bring up to three books, but bringing a book is optional. The outdoor area will be used only if the weather allows.

Check your answer

Keep the day, time, free entry, optional book contribution and weather condition. A summary saying “Bring three books to the outdoor event” would change two important parts of the notice.

Judge a summary by how faithfully it helps its reader, not just by how many words it removes.