Guide
Using AI to write tender responses
Plenty of small firms now draft tender answers with ChatGPT, Claude or Copilot, and plenty worry they will be marked down for it. Government policy does not ban it. What loses marks is what has always lost marks: generic answers, missing evidence and claims nobody can back up. AI makes all three easier to produce.
Last checked: 6 October 2026
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What government policy says
The Cabinet Office's PPN 017, Improving transparency of AI use in procurement, applies to central government departments, their executive agencies and non-departmental public bodies; other public bodies may choose to follow it. It says suppliers' use of AI is not prohibited during the commercial process, and that buyers should understand the risks, as they would if a supplier had used a bid writer.
- Buyers may ask whether you used AI or machine learning tools, including large language models, in any part of your tender, and where.
- They may ask whether AI is part of the product or service you are offering.
- The note says those questions should not be scored or taken into account in assessing the tender: they are for information.
- Buyers can check what a tender says through clarification questions, supplier presentations and site visits.
- It warns that AI-generated content may include inaccurate or misleading statements, and that suppliers should not use the buyer's confidential information to train AI tools.
Councils, NHS bodies and universities set their own approach, and may add their own declaration. Read the instructions to tenderers and answer any AI question honestly.
Where AI genuinely helps
- Understanding the documents. Summarising a long specification, listing every question with its word limit and weighting, and building a compliance checklist.
- Structure. Turning a question's bullet points into subheadings, so the evaluator finds each element where they expect it.
- Drafting from your own evidence. Give it your case study, your method and your numbers, and ask for a first draft in the question's structure.
- Editing. Cutting to the word limit, removing jargon and filler, and checking the answer covers everything the question asked.
- A second marker. Asking it to score your draft against the buyer's published descriptors and say what is missing.
Where it loses marks
Evaluators award marks for specific evidence against a published scheme (how answers are scored). An AI tool asked to “write an answer about our approach to quality” produces a fluent answer that any supplier could have submitted, which is exactly what scores a 2. It also tends to fill gaps with plausible detail. A made-up accreditation, client or figure in a tender is a misrepresentation, and it can become a contractual promise if you win.
The rule that keeps you safe
AI writes the sentences; you supply every fact. If a claim in the answer did not come from your own notes, records or case studies, delete it or check it. Read the final version aloud as if you were the evaluator, and ask whether you could defend each sentence in a clarification meeting.
Confidentiality
Tender documents can contain confidential or personal information, and your own answers contain your pricing and methods. Use a tool whose terms say your inputs are not used to train its models, switch off any setting that shares your conversations, and never paste personal data from a buyer's documents. If the tender says its documents are confidential, treat an AI tool like any other third party you would share them with.
The firms that use AI well spend the time it saves on the parts it cannot do: understanding the buyer, choosing the right tenders and gathering better evidence. Deciding whether to bid is still the decision that matters most.
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Common questions
AI and tenders
Is it allowed to use ChatGPT or other AI to write a tender?
Yes. Government procurement policy (PPN 017) says suppliers' use of AI is not prohibited during the commercial process. Buyers are told to understand the risks, as they would if a supplier used a bid writer, and may ask whether and how you used AI.
Do I have to declare that I used AI in a tender?
Only if the buyer asks. PPN 017 gives central government buyers example questions, such as whether you used AI tools to help with any part of your submission and where. It says those answers should not be scored or taken into account in assessing the tender. Answer honestly: a buyer can check through clarification questions, presentations and site visits.
Can buyers tell if a tender was written by AI?
Often they do not need to. Generic answers that could have come from any supplier score poorly whoever wrote them, because evaluators award marks for specific evidence. Invented or inaccurate statements are the bigger risk, and PPN 017 warns buyers about exactly that.
Is it safe to paste tender documents into an AI tool?
Check first. Some tender documents are confidential, and PPN 017 says suppliers should not use a buyer's confidential information to train AI tools. Use a tool whose terms say your inputs are not used for training, and never paste personal data from a buyer's documents.