Does the EU AI Act apply to bid writing?

Yes, but lightly: a bid team using AI at work is a deployer under the EU AI Act, and its main duty is AI literacy. Drafting a response for one buyer is neither a high-risk use nor public-interest text, so the Act's heavier duties and its labelling rule don't reach the team. Where the tender sets its own rules on AI, they bind the bid more directly than the Act does.

Your team is in scope if the response is used in the EU

If your team uses an AI tool at work, the EU AI Act treats it as a deployer. It is in scope if it is established in the EU, and most likely also if a buyer in the EU uses its response. The definition in Article 3 covers any organisation using an AI system under its authority and leaves out only personal, non-professional use. Using ChatGPT at work counts, as do Microsoft Copilot, a custom GPT or a purpose-built response platform.

Where you're established decides the route in. Article 2 covers deployers in the Union directly. It also reaches those established outside the Union where the AI system's output is used in the Union.

Take a UK facilities supplier answering a Dutch municipality's tender, with writers drafting sections in ChatGPT and the bid manager signing off the response. The supplier sits outside the EU, but a buyer in the Netherlands reads and scores its AI-assisted text. Does the EU AI Act apply to a UK company bidding for EU tenders? On this reading, most likely yes, so the team should act as if it's in scope. That's an inference from the provision rather than anything it says about bids, and the same team answering only UK buyers is unlikely to be caught by it.

A response sent to one buyer needs no AI label

Do I have to label AI-written text in a bid under the AI Act? No: the labelling duty in Article 50 covers AI-generated text published to inform the public on matters of public interest, and a tender response goes to one buyer's evaluators. Nobody publishes it, so nothing in it needs a label under the Act.

The edge to watch is anything the team publishes later. Turn the contract into a public case study, and the text reaches the public, though it's debatable whether a supplier's case study informs anyone on a matter of public interest. Even then, under Article 50, the duty falls away where AI-generated text has gone through human review or editorial control and a person holds editorial responsibility for the publication. A named reviewer who edits and approves the case study, as the bid manager does with a response, can meet that test.

If the tender asks you to declare AI use, that's the buyer's requirement, not the Act's.

Ranking people for a staffing plan comes nearest the high-risk list

If you use AI to choose which named people go into a staffing plan, you come closest to the Act's high-risk list, and that choice is safer left with people. Annex III sets out the high-risk areas, and its employment category covers AI systems intended for the recruitment or selection of natural persons.

Say the Dutch tender asks for a named account manager and site leads. One writer asks ChatGPT to tighten the CVs of the people the bid manager has already chosen. Another pastes in the shortlisted CVs and asks which candidates to put forward. The first is tailoring content. The second gives the AI a choice between people, which sits closer to the selection the employment category describes.

Whether that use makes the tool a high-risk system is an inference, not a settled point. Annex III speaks of systems intended for selection, and it's not clear that a one-off prompt to a general chat assistant counts. On the European Commission's AI policy page, high-risk obligations for Annex III uses, including employment, apply from 2 December 2027, extended by the July 2026 amendment. Keep the ranking human, and the question doesn't arise.

What to do on your next bid

Read the tender's AI clause first, take literacy measures if you're in scope, keep choices about people human, and add no AI label the buyer hasn't asked for. These decisions sit inside the way you already run each bid, not in a separate compliance track.

Of the AI Act deployer obligations, the one that reaches most bid teams sits in Article 4. You take measures to support the AI literacy of staff and others using AI on your behalf. That duty has applied since February 2025, and since the July 2026 amendment, it doesn't require you to guarantee any specific level for any individual.

A tender's AI clause can cap how much of the response AI may write, or require a person to sign off on every element before submission. Its qualification questionnaire can also ask whether AI was used and how much of the response it wrote. Treat the clause like any requirement you extract from the tender pack, and confirm it before you start drafting.

Where a buyer asks for disclosure, you'll need to show what AI drafted and who approved it. In SEQUESTO's agentic operating system (aOS), every action is logged with actor, timestamp and item, from agent invocations and edits to approvals, and the log can be exported for a buyer's questionnaire or a compliance review.

Follow these steps in order:

1. Read the tender's AI clause and log it as a requirement.
2. Brief writers, reviewers and subject matter experts on the AI tools they use and how to check the output, and keep a note of the briefing.
3. Let AI tailor CVs, but never let it choose the people in a staffing plan.
4. Label AI use only where the tender asks for it.

On the next tender that lands, start with step one, before anyone opens a drafting tool.