How to Cite AI in Academic Writing: APA, MLA, Chicago Guide (2026 Updates)

What To Know First

Citing AI in academic writing is not optional—it’s a transparency requirement. Major style guides (APA, MLA, Chicago) have all updated their rules for 2025-2026, and the guidance varies significantly depending on whether you cited a specific AI chat or the tool generally. Here’s the quick answer:

• APA Style: Treat the AI developer (OpenAI, Anthropic, Google) as the author. Cite specific chat sessions when helpful to readers; cite the tool generally for editing or analysis tasks. Format: Company. (year, month day). _Chat title_ \[Generative AI chat\]. Tool Name. URL
• MLA Style: Do not treat the AI tool as an author. Instead, use the prompt text as the “Title of Source” and name the AI tool as the “Title of Container.” Format: "Prompt description" prompt. _AI Tool_, model version, Company, Date, URL
• Chicago Style: Usually cite AI in a footnote or endnote rather than the bibliography. Treat it as software or personal communication, depending on the depth of use.

Always verify your institution’s AI policy before citing. When in doubt, disclose more rather than less—and never use AI-generated citations without verifying them against original sources.

Why You Must Cite AI in Academic Writing

Transparency is the single most important principle behind citing AI in academic work. When you use a generative AI tool to assist in writing—whether for brainstorming, editing, summarizing, or generating content—you are using a resource that did not exist when traditional citations were first developed. That means your readers need to know exactly what you did and how you used the tool so they can evaluate your work appropriately.

The APA Style team explicitly notes that while “it’s still not a good idea to submit AI-generated work as though you did it yourself,” there are “many potentially legitimate ways to use AI tools within the context of academic writing.” The key is transparency: describe what you did, why you did it, and how you verified the output.

Here’s why proper AI citation matters in 2025-2026:

Critical point: AI-generated content can contain fabricated facts, hallucinated citations, and confidently wrong answers. Citing AI does not absolve you of responsibility for accuracy—you must verify everything the AI produced before including it in your work.

When to Cite AI: The Core Rules

Not every interaction with an AI tool requires a citation. The APA Style guidelines clarify that citation depends on the nature and depth of the AI use. Here’s what the official guidance says:

You Should Cite AI When You Used It To:

• Generate content you quoted or paraphrased — This is the most straightforward case. If you asked an AI to write a paragraph and included it in your paper, cite it.
• Perform data analysis or analysis — If AI played a role in interpreting data, cite it as a research tool.
• Create tables, figures, or visualizations — Include a note in the figure caption acknowledging AI assistance.
• Translate text — If you used AI to translate sources or your own writing, cite the tool generally and note any human translator who verified the output.
• Write code or scripts — If AI helped generate or debug code central to your paper, cite it.

You May Not Need to Cite AI When You Used It To:

• Check spelling and grammar — Standard tools like Grammarly don’t typically require citation unless used substantially.
• Brainstorm ideas — General brainstorming that doesn’t appear in the final paper usually doesn’t need citation, though you may want to acknowledge it in an author note.
• Summarizing sources you then read — If you used AI to highlight key points in a source you then read directly, the citation should go to the original source, not the AI.

Important distinction: Many institutions require disclosure even when formal citation isn’t required. Check your syllabus. The default position at many universities is “disclose, don’t hide.”

APA Style: How to Cite AI in References (2025-2026 Update)

The APA Style Center published its definitive updated guidance for citing generative AI in September 2025, splitting the advice into a series of posts. The current rules are clear and specific.

Citing a Specific AI Chat

If you want to let readers reproduce your AI interaction, cite the specific chat. This is the preferred approach when the chat contributed substantive content to your paper.

Reference format:

Company Name. (year, month day). _Title of chat in italics_ [Generative AI chat]. Tool Name/Model. URL

In-text citation: (Company Name, year) or Company Name (year)

Examples from official APA Style guidance:

Anthropic Claude:

Anthropic. (2025, May 20). _Essential grammar topics for high school graduates_ [Generative AI chat]. Claude Sonnet 4. https://claude.ai/share/329173b2-ec93-4663-ac68-4f65ea4f166d

Google Gemini:

Google. (2025, May 22). _High school grammar concepts overview_ [Generative AI chat]. Gemini 2.5 Flash. https://g.co/gemini/share/a1306ce12929

OpenAI ChatGPT:

OpenAI. (2025, August 21). _High school grammar concepts_ [Generative AI chat]. ChatGPT. https://chatgpt.com/share/68a77b60-0ee4-800c-9acc-cd3fd573c311

Perplexity AI:

Perplexity AI. (2025, May 20). _High school grammar topics_ [Generative AI chat]. Perplexity. https://www.perplexity.ai/search/a457cb8c-c663-4c9b-b34e-cb03d8108b35

Citing an AI Tool Generally

Use this format when you used AI for editing, translation, code assistance, or other supporting tasks where citing every individual chat would be impractical or inappropriate.

Reference format:

Company Name. (year). _Tool Name/Model in Title Case_ [Large language model]. URL

Examples:

Anthropic. (2025). _Claude 4 Sonnet_ [Large language model]. https://claude.ai/new

Google. (2025). _Gemini 2.5 Flash_ [Large language model]. https://gemini.google.com/

OpenAI. (2025). _ChatGPT_ [Large language model]. https://chatgpt.com/

Perplexity AI. (2025). _Perplexity_ [Large language model]. https://www.perplexity.ai/

Key APA Citation Rules You Need to Know

1. Author is always the company, never the AI. AI cannot be an author because it is not a living, conscious human who can give consent or take responsibility.
2. Date includes year, month, and day for specific chats. For general tool citations, use only the year the tool was most recently updated.
3. Include the model name when available. Use “ChatGPT-5” rather than “ChatGPT” if you know the specific model. The model name goes in the title, not as a version number.
4. Use bracketed descriptions like [Generative AI chat] or [Large language model] to clarify the source type.
5. Include a shareable URL when possible. This is now a core APA requirement for AI citations.

In-Text Citation Examples

Parenthetical: (Anthropic, 2025)

Narrative: Anthropic (2025)

Method section disclosure: “I used Claude 3.7 Sonnet (Anthropic, 2025), a generative artificial intelligence (AI) tool, to generate a list of grammar topics that high school students should know by the end of the 12th grade.”

MLA Style: How to Cite AI in Works Cited (2025 Update)

MLA published an updated and revised guidance on August 13, 2025. The most significant change from the 2023 version is the requirement to include the model name or version in the Works Cited entry. MLA also clarified that a stable, shareable URL is now preferred.

MLA Format Structure

MLA Examples

Example 1: Paraphrasing AI-generated text

"Describe the theme of nature in Jane Austen's Mansfield Park" prompt. ChatGPT, model GPT-4o, OpenAI, 23 Sept. 2024, chatgpt.com/share/66f1b0a0-d704-8000-be9a-85f53c850607.

In-text citation: ("Describe the theme")

Example 2: AI-generated creative text (poem)

"The Oak Tree" free verse poem. ChatGPT, model GPT-4o, OpenAI, 23 Sept. 2024, chatgpt.com/share/66f1c740-7500-8000-a38b-6d6045c811f5.

Example 3: AI-generated image caption

Fig. 1. "Create an expressionist-style image of two people standing on a beach looking at the ocean" prompt, DALL-E, version 3, OpenAI, 23 Sept. 2024, chatgpt.com/share/66f1c3a3-3f90-8000-9750-82c57c4a6592.

Critical MLA Rules

1. Do not treat the AI tool as the author. MLA follows publisher policies that do not allow AI to be listed as an author. The prompt text goes in the “Title of Source” position.
2. Include the specific model name. The 2025 update requires model names (e.g., GPT-4o, Claude Sonnet 4, Gemini 2.5 Flash) in the Version element.
3. Prioritize shareable URLs. If your AI tool provides a stable, shareable link, use that. Otherwise, use the general tool URL.
4. Cite secondary sources the AI found, not the AI itself. If ChatGPT summarizes a Britannica article, click through to the Britannica page and cite that directly instead of citing ChatGPT.

Chicago Style: How to Cite AI in Academic Writing

Chicago Style (18th edition, 2024) approaches AI citation differently from APA and MLA. The Chicago Manual of Style currently recommends citing AI in footnotes or endnotes rather than in a bibliography entry, treating AI-generated content similarly to personal communication or software.

Footnote Format

1. Text generated by ChatGPT, June 20, 2025, OpenAI, https://chatgpt.com.

Bibliography Entry (Optional)

If a stable URL is available, you may include a bibliography entry:

OpenAI. ChatGPT. March 5, 2026. https://chatgpt.com/share/...

Chicago Rules at a Glance

Key Chicago Citation Rules

1. Use Chicago Style 18th edition. Earlier editions do not address AI.
2. Prefer footnotes over bibliography entries. Chicago treats AI as a form of personal communication.
3. Include the date of access. This is important for verifying when the AI response was generated.
4. Include the URL when available. If the tool provides a shareable link, include it.
5. Describe AI editing in the text. If AI helped with editing or translation, note it in the footnote without a formal citation.

Harvard Style: How to Cite AI (Bonus)

Although Harvard isn’t mentioned in the original title, many students use this style and should know it’s covered by major university libraries.

Format:

Company Name (year) _Tool Name_ Version number. Available at: URL (Accessed: date)

Example:

OpenAI (2025) _ChatGPT_ GPT-4o. Available at: https://chatgpt.com (Accessed: 15 May 2026)

When to Disclose AI Use Without Formal Citation

Sometimes your institution requires AI disclosure but doesn’t require a formal reference. Here’s how to handle those situations:

Method section disclosure:

“The authors used ChatGPT (OpenAI, 2026) solely for language refinement and editing. The initial drafting, data analysis, and interpretation of results were performed exclusively by the human authors.”

Acknowledgments section:

“The authors thank ChatGPT (OpenAI) for language editing assistance. All content was reviewed and substantially revised by the human authors.”

Author note:

“This article was prepared with the assistance of AI tools for language editing. The authors retain full responsibility for all content, errors, and conclusions.”

Common Mistakes Students Make When Citing AI

These errors appear frequently in student papers and can lead to plagiarism accusations or formatting penalties:

How to Cite AI-Generated Images and Figures

If you used AI to create images, charts, or figures for your paper, you need both a citation and a caption:

MLA image caption:

Fig. 1. "Create an expressionist-style image of two people standing on a beach looking at the ocean" prompt, DALL-E, version 3, OpenAI, 23 Sept. 2024, chatgpt.com/share/66f1c3a3-3f90-8000-9750-82c57c4a6592.

APA figure note:

Note. The figure was created with assistance from DALL-E (OpenAI, 2024).

Chicago figure caption:

1. Generated using DALL-E, version 3 (OpenAI, 2024).

What About AI Detection Tools and Plagiarism?

Properly citing AI doesn’t protect you from plagiarism accusations if you use AI improperly. Several institutions now classify undisclosed AI use as academic misconduct—separate from plagiarism but treated with equal seriousness at many UK and US universities.

Before submitting any paper that used AI:

1. Read your institution’s AI policy carefully
2. Disclose AI use in the methodology or acknowledgments section
3. Cite AI according to the style guide required by your instructor
4. Verify every piece of content the AI produced
5. Ensure your own intellectual contribution dominates the paper

Practical Checklist: Before You Submit

Use this checklist before submitting any paper that involved AI:

• Checked the instructor’s or journal’s AI policy
• Disclosed AI use in methodology, acknowledgments, or author note
• Cited AI according to APA/MLA/Chicago format (depending on required style)
• Included the company name as author (not the AI itself)
• ncluded the model name (e.g., GPT-4o, Claude Sonnet 4)
• Included a shareable URL for any specific chat cited
• Verified every AI-generated claim against original sources
• Verified every citation the AI provided actually exists
• Confirmed the paper’s voice and analysis are predominantly my own
• Saved drafts and notes demonstrating my writing process

Related Guides

• Citation Management Tools Comparison: Zotero, Mendeley, and EndNote
• How to Avoid Plagiarism: Definition, Examples & Detection Tools
• Academic Writing Style: Formal vs Informal Tone
• MLA Citation Guide: Complete Tutorial
• Chicago Style Citation: Complete Guide
• APA Citation Format: Nursing Paper Writing

Summary and Next Steps

Citing AI in academic writing requires following the specific format of your required style guide. APA treats the AI developer as the author, MLA uses the prompt as the title, and Chicago prefers footnotes. The single most important principle is transparency—your readers need to know exactly how you used AI.

What to do next:

1. Check your institution’s AI policy before citing
2. Use the citation format above that matches your required style (APA, MLA, or Chicago)
3. Always verify AI-generated content before including it
4. Never use AI citations you haven’t verified against original sources

If you need help with academic writing or want original, human-written papers that meet all ethical and citation standards, contact our expert writers for personalized assistance.