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YES

As of 13 August 2026, AI can summarise a long work document.

Most people should do this themselves; the prompt is on this page.

Can you do it?

5 minutesto a draft.

30 minutesto something you’d act on.

Cost, all in£0

Skill neededchat-fluent

Who has to check ityou

What the alternative costsThe supplied tool list gives no price for a human document-summarisation service.

If this goes wrong: the summary omits a qualification or overstates a conclusion, and you correct it by returning to the source before sharing it.

What to actually do

  1. Do it yourself

    The route this page recommends

    A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

    How to actually do it

    1. Open the document and check your employer's rules on uploading work material to an external AI service.
    2. Decide who will read the summary and what they need to do with it, then write that audience and purpose in the prompt.
    3. Copy the document into a chatbot or upload it if the service supports files; if it is too long, split it into labelled sections and ask the model to summarise the sections together.
    4. Paste the prompt with the document and ask for source section headings or page numbers beside important points.
    5. Open the original document beside the draft and compare every decision, action, deadline, figure and qualification against its cited source.
    6. Remove unsupported claims, restore any omitted caveats, then send or save the checked summary with a note stating that it is a summary of the original document.

    Prompt

    Summarise the work document below for [AUDIENCE] so they can [PURPOSE].

Use only the information in the document. Do not invent facts, explanations, recommendations or missing context. Separate the document's stated facts from interpretations and proposals. Preserve important qualifications, conditions, deadlines, figures and disagreements. If the document is unclear, contradictory or incomplete, flag that explicitly instead of resolving it yourself.

Return:
1. A five-sentence executive summary.
2. The main points under clear headings.
3. Decisions already made.
4. Actions, owners and deadlines, only where the document states them.
5. Risks, dependencies and unresolved questions.
6. A list of claims that need checking against the original before this is shared.

For every important point, include the original section heading or page number if available. Keep the tone plain and concise. The source document is:

[PASTE DOCUMENT HERE]

    Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.

  2. Use a tool built for this

    Second choice

  3. Hand it to a person

    The distant third

    A person who owns the outcome does this end to end, worth it when the failure is dear.

What it gets wrong

  • AI cannot know which detail matters to your team unless you state the audience and purpose.
  • AI can flatten a cautious qualification into a confident statement, especially in policy, risk or strategy documents.
  • AI cannot resolve contradictions or missing context without a person who knows the work behind the document.
  • AI does not know whether the document is safe to upload under your employer's confidentiality rules.

Even on a YES, the friction has a name: context depth and judgement under ambiguity.

How we scored this

Five axes, each scored nought to two by hand: ten means AI carries the task cleanly, and the thresholds that turn a total into YES, PARTLY or NO are published in the methodology. Each axis name links to its definition.

AxisScore (0–2)
Output2
Inputs2
Verification2
Liability2
Effort delta2
Total10 / 10

The methodology and its thresholds are published in full.

FAQ

Can ChatGPT summarise a long document?
Yes. Give it the document, the intended reader and the purpose, then ask it to preserve qualifications, decisions, deadlines and unresolved questions. Check important points against the original before sharing the summary.
How long a document can AI summarise?
That depends on the service and the document format, so do not assume one upload will accept everything. If it is too long, split it into labelled sections and ask the model to produce one combined summary after processing them.
Is it safe to upload a confidential work document to AI?
Only if your employer's rules and the service's handling of uploaded material allow it. Remove personal or commercially sensitive information where possible, or use an organisation-approved tool instead.
Can AI summarise a PDF accurately?
It can produce a useful first summary, but scanned pages, tables, footnotes and charts can be missed or misread. Compare figures, conditions, decisions and conclusions with the PDF before relying on the result.

Nearby answers

All Workplace writing rulings

Assessed by gpt-5.6-luna (gpt-5.6-luna) on 2026-08-13, second-checked by an independent model. Wrong somewhere? Email [email protected] and it gets re-checked.

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