Do I have to disclose that I used AI to help write something?

There is no single rule

Disclosure is set by the party that receives your work: a course, a journal, an employer, a client, a publisher. The same act of using an AI tool can be fine to mention casually in one place and a required statement in another. Countries and institutions differ, and rules are changing, so a general forum answer cannot replace the document you are bound by.

What two major publishing bodies say

Publishing is the area with the clearest written positions, and they agree on the main points.

The Committee on Publication Ethics (COPE) states that AI tools cannot be listed as an author because they cannot take responsibility for the work. It says authors who use AI tools in writing a manuscript must be transparent about how and which tool was used, in the Materials and Methods or a similar section, and that authors "are fully responsible for the content of their manuscript, even those parts produced by an AI tool" (COPE, Authorship and AI tools).

The International Committee of Medical Journal Editors (ICMJE) recommends that journals require authors to disclose at submission whether they used AI-assisted technologies, and to describe the use in both the cover letter and the submitted work. It adds that authors should carefully review and edit AI-generated content because it can be "incorrect, incomplete, or biased", and that nondisclosure "may be construed as misconduct in some circumstances" (ICMJE, Use of AI by Authors).

Those two documents are about journals. Your course or workplace may be stricter, looser or silent.

Where to look

Situation	Where the rule usually lives	What to do
Class assignment	Syllabus, assignment brief, department or school policy	Read it, then ask the instructor if unclear
Journal or conference	Author guidelines, submission form	Follow the stated section and wording
Job, client or agency	Employee handbook, contract, style guide	Ask your manager or the client
Personal blog or social post	Platform terms, your own standards	Your choice, but being open builds trust

What a disclosure can look like

Keep it factual: the tool, the purpose, and who checked it.

I used ChatGPT to suggest an outline and to tighten the wording of two paragraphs. I wrote the analysis, checked every source and edited the final text myself.

A good statement answers three questions: which tool, for what task, and what you did to verify the result.

Reasons to be open even when it is optional

An honest note costs little and answers the question before it is asked. Detector scores are a poor substitute for evidence, so a clear account of your process is more useful than anything a tool reports. Keep the prompt, the raw output and your edits, as described in the editing workflow. If you are unsure how to make a draft your own, see matching your writing voice and editing an AI draft.

What disclosure does not do

Disclosing does not make AI-written text yours. You remain responsible for its accuracy and for anything copied or invented. If a policy forbids AI help for the task, a disclosure does not turn it into permitted use.