How to Cite ChatGPT and Other AI Tools (APA, MLA, Chicago)

Do you even have to cite ChatGPT?

Short answer: usually yes. If you quote, paraphrase, or build on something ChatGPT produced, you cite it — the same way you would any source. Even purely functional uses, like having AI edit your prose or translate a sentence, should be acknowledged, although a full citation is not always required.

One caveat comes before any style rule: check your instructor's or journal's policy first. Many require you to disclose AI use regardless of how you cite it, and some restrict it entirely. We cover that in can you use AI to write a research paper. Once you know AI use is allowed, this guide gives you the exact official template for APA, MLA, and Chicago.

The nuance everyone gets wrong

AI output is not a stable, retrievable source. If your reader follows your citation, they will not see the same text you saw — the model may answer differently, and a private chat may not be public at all. That is why all three style guides lean on describing how you used the tool, and why saving a transcript or a shareable link matters as much as the citation format.

How to cite ChatGPT in APA (7th edition)

APA treats AI like software: the author is the company, not "ChatGPT". This follows the official APA Style guidance.

Reference template: OpenAI. (year, month day). Title of chat in italics [Generative AI chat]. ChatGPT. URL of the chat

Worked example: OpenAI. (2026, March 14). Thesis statement feedback for an essay on urban farming [Generative AI chat]. ChatGPT. https://chatgpt.com/share/abc123example

In text: (OpenAI, 2026) or, narratively, OpenAI (2026). The prompt is not placed in the reference — describe it in your text, and put a full transcript in an appendix if it helps.

Seeing the two side by side helps. The reference-list entry is the long one at the bottom of your paper; the in-text citation is the short pointer inside your sentence:

• Reference list: OpenAI. (2026, March 14). Thesis statement feedback for an essay on urban farming [Generative AI chat]. ChatGPT. https://chatgpt.com/share/abc123example
• In text (parenthetical): The model suggested narrowing the claim to a single city (OpenAI, 2026).
• In text (narrative): OpenAI (2026) suggested narrowing the claim to a single city.

How to cite ChatGPT in MLA (9th edition)

MLA does the opposite of what most writers expect: your prompt becomes the title. This follows the official MLA Style Center guidance.

Works Cited template: "Your prompt, in quotation marks" prompt. Tool Name, version (the model, e.g. GPT-4o), Company, date generated, shareable URL.

Worked example: "Explain the difference between 'affect' and 'effect' with examples" prompt. ChatGPT, GPT-4o version, OpenAI, 14 Mar. 2026, chatgpt.com/share/abc123example.

In text: use the first words of the entry — ("Explain the difference"). MLA also asks you to acknowledge functional uses, like editing or translation, in a note or in your text.

Side by side, the Works Cited entry and the in-text citation look like this:

• Works Cited: "Explain the difference between 'affect' and 'effect' with examples" prompt. ChatGPT, GPT-4o version, OpenAI, 14 Mar. 2026, chatgpt.com/share/abc123example.
• In text: ChatGPT distinguished the verb from the noun with clear examples ("Explain the difference").

Notice the model is written as "GPT-4o version" — the version convention, not "model GPT-4o". If you cannot see or do not know the exact model, MLA lets you leave the version out rather than guess.

How to cite ChatGPT in Chicago (17th/18th edition)

Chicago treats an AI chat like personal communication — a footnote, usually not a bibliography entry. This follows the official Chicago Manual Q&A.

Footnote (basic): 1. Text generated by ChatGPT, OpenAI, March 14, 2026, https://chatgpt.com.

Footnote (with the prompt): 1. ChatGPT, response to "Summarize the main causes of the 2008 financial crisis," OpenAI, March 14, 2026.

ChatGPT stands in as the author and OpenAI is the publisher. Because a private chat is like personal communication, it usually does not go in the bibliography. If you edited the output, note it — for example, "edited for style and content".

To see the difference between the note and a (rare) bibliography entry:

• Footnote: 1. Text generated by ChatGPT, OpenAI, March 14, 2026, https://chatgpt.com.
• Shortened note (later reference): 3. Text generated by ChatGPT, OpenAI.
• Bibliography (only if you have a public shareable link): ChatGPT. Text generated by ChatGPT. OpenAI, March 14, 2026. https://chatgpt.com/share/abc123example.

Most of the time you will only need the footnote. Chicago's own Q&A stresses that because AI text is not recoverable by your reader, the note is where the citation belongs.

What if you can't share a link?

Many chats have no public URL — you were logged in, the tool has no share feature, or your school blocks the shareable link. All three styles handle this the same way: drop the URL and keep everything else.

• APA: end the reference at "ChatGPT." with no URL. Then note in your text that the transcript is available on request, and keep it in an appendix.
• MLA: omit the URL from the Works Cited entry; the prompt, tool, version, company, and date still identify it.
• Chicago: the footnote already treats the chat like personal communication, so a missing link is normal — just leave the URL off.

The one thing you should never do is invent or paste a link that does not actually open your chat. A dead or wrong URL is worse than none. Save the raw transcript instead — that is the real evidence of what you used.

Citing other AI tools: Gemini, Copilot, and Claude

The pattern is identical for every generative AI tool — only the names change. Put the company as the author (APA), the tool as the container (MLA), and the tool as the author with the company as publisher (Chicago). Here is who is who:

So an APA reference for Google Gemini reads: Google. (2026, March 14). Feedback on my introduction paragraph [Generative AI chat]. Gemini. URL — with the in-text citation (Google, 2026). For Claude it would be Anthropic (as author) and Claude (as the source line); for Microsoft Copilot it is Microsoft and Copilot. Everything else in the template stays the same. Always use the tool's real product name and its parent company, and check the official style pages if a vendor changes branding.

Citation vs disclosure: should you cite AI at all?

These are two different obligations, and mixing them up is where most students go wrong.

• Citation is for content: when AI produced words, ideas, an image, or code that appears in your work, you cite it like any source.
• Disclosure is for process: a short statement of how you used AI — for example, "ChatGPT was used to check grammar and suggest synonyms; all arguments and final wording are my own." Many instructors and journals require this even when nothing is directly quoted.

Functional-only uses — grammar fixes, translation, brainstorming that you rewrote entirely — usually call for disclosure rather than a formal citation. But that line is set by your policy, not by the style guide. When your assignment asks for an AI statement, put it in your methods section, a footnote, or a note under the title, and be specific about what the tool did.

APA vs MLA vs Chicago at a glance

Citing AI images, code, and other output

The same logic extends beyond text. If AI generated an image, a table, or code you used, cite or acknowledge it in the same style, describing what was generated and which tool produced it. When in doubt, disclose more rather than less.

Common mistakes ESL writers make

• Listing "ChatGPT" as the author in APA. The author is OpenAI, the company. In MLA the prompt is the title, and in Chicago ChatGPT is the author with OpenAI as publisher — do not mix these up between styles.
• Citing a source the AI "gave" you without checking it. This is the most damaging mistake. Chatbots frequently fabricate citations — a real-sounding author, journal, and page number for a paper that does not exist. Never copy a reference from an AI into your bibliography. Find and read the actual source, or cite the AI itself for the idea. A fake reference can fail an entire paper.
• Using a generic date. All three styles want the specific day the content was generated, not the year alone.
• Writing the MLA version as "model GPT-4o". The convention is "GPT-4o version" — the model name followed by the word "version". If you are unsure of the exact model, leave it out rather than guess.
• Treating the chat URL as a normal source link. It is not retrievable in the usual sense — save a transcript or a shareable link, and never paste a link that does not open your chat.
• Citing the tool but not disclosing how you used it. For language help especially, a short disclosure in your text or methods is what most policies actually require.
• Passing off AI text as fully your own. If the wording is the model's, quote or paraphrase and cite it — do not present it as original writing.
• Forgetting to check the assignment's own rule, which overrides the style guide.

The rule that beats every template: your policy wins

This is worth repeating because it is the one thing that overrides everything above. A style guide tells you how to format a citation; it does not tell you whether your instructor or journal permits AI in the first place, or what they require when they do. Those local rules always win.

Some courses ban generative AI outright. Some allow it only for brainstorming or grammar. Some require a signed AI-use statement. Many journals now have explicit author guidelines on disclosing AI assistance. Before you format a single citation, read the syllabus, the assignment brief, or the submission guidelines — and when they conflict with a style guide, follow the policy. If the rule is unclear, ask; a one-line email to your instructor is far cheaper than an academic-integrity case. For a deeper look at when AI use is appropriate at all, see can you use AI to write a research paper.

A faster, safer workflow

The reliable habit is disclose, document, and keep a transcript. Note where you used AI, save the chat, and format the citation in your required style. Diglot helps you keep that record clean.

• Keep your process transparent. The AI writing assistant works from your own meaning, so what you disclose is real language help, not ghostwriting.
• Paraphrase AI content properly. If you restate something a model produced, do it in your own words and cite it — see how to paraphrase without plagiarizing.
• Prove your own contribution. A Diglot Authorship Certificate records how your document was actually written — a clean, timestamped account of your edits.
• One workspace for the whole paper. Explore the ESL writing tool built for non-native writers.

Citing AI is not hard once you have the template. Pick your style, use the exact format above, and add a short line on how you used the tool. Last verified June 2026 — these guides update often, so check the official pages if your assignment is high-stakes.

Try Diglot to write and cite