How to Cite AI (ChatGPT, Claude, Gemini) in APA, MLA & Chicago Format (2026)

Using AI tools like ChatGPT, Claude, or Gemini in your research? You need to cite them properly—or risk academic integrity violations.

AI citations are tricky because the major style guides (APA, MLA, Chicago) have only recently updated their rules. This guide gives you the exact formats for citing AI-generated content in 2026, with copy-paste examples you can use right now.

Quick Reference: AI Citation Formats

Before we dive deep, here's what you need:

APA 7th Edition:

OpenAI. (2026). ChatGPT (May 9 version) [Large language model]. https://chat.openai.com

MLA 9th Edition:

"Describe the response" prompt. ChatGPT, 9 May 2026, chat.openai.com.

Chicago (Notes & Bibliography):

OpenAI, ChatGPT, response to "Your prompt here," May 9, 2026, https://chat.openai.com.

Now let's break down each format in detail.

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How to Cite ChatGPT in APA Format

APA treats AI tools as software or algorithms. Here's the official format:

Reference List Entry (APA)

Format:

Author. (Year). Name of AI tool (Version) [Description]. URL

Example for ChatGPT:

OpenAI. (2026). ChatGPT (May 9 version) [Large language model]. https://chat.openai.com

Example for Claude:

Anthropic. (2026). Claude (Claude 3 Opus) [Large language model]. https://claude.ai

Example for Gemini:

Google. (2026). Gemini (Gemini 1.5 Pro) [Large language model]. https://gemini.google.com

In-Text Citation (APA)

When you use AI-generated content in your paper, cite it like this:

According to ChatGPT, the causes of World War I included... (OpenAI, 2026).

Or:

OpenAI (2026) suggests that...

Key APA Rules for AI Citations

1. Include the version date — AI models change frequently. Specify when you accessed it.
2. Describe the tool type — Use [Large language model] or [AI chatbot] in brackets.
3. Don't list AI as an author — The company (OpenAI, Anthropic, Google) is the author.
4. Include the prompt in your paper — APA recommends describing or quoting your prompt.

Example Paragraph with APA Citation

When asked to explain photosynthesis, ChatGPT described it as "the process by which plants convert light energy into chemical energy" (OpenAI, 2026). This definition aligns with standard biology textbooks.

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How to Cite ChatGPT in MLA Format

MLA treats AI tools differently than APA. The prompt you used becomes part of the citation.

Works Cited Entry (MLA)

Format:

"Description of prompt" prompt. Name of AI Tool, Version, Company, Date, URL.

Example for ChatGPT:

"Explain the themes in The Great Gatsby" prompt. ChatGPT, GPT-4, OpenAI, 9 May 2026, chat.openai.com.

Example for Claude:

"Summarize the causes of climate change" prompt. Claude, Claude 3 Opus, Anthropic, 9 May 2026, claude.ai.

In-Text Citation (MLA)

MLA in-text citations use a shortened form:

The AI explained that Gatsby represents "the corrupted American Dream" ("Explain the themes").

Or use a signal phrase:

ChatGPT suggests that the green light symbolizes Gatsby's hopes ("Explain the themes").

Key MLA Rules for AI Citations

1. Quote or describe your prompt — The prompt starts your citation.
2. Include the model version — GPT-4, Claude 3, etc.
3. Use the access date — Since AI responses change, the date matters.
4. Treat AI as the "author" — The tool name (ChatGPT) functions as the source.

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How to Cite ChatGPT in Chicago Style

Chicago has two systems: Notes-Bibliography and Author-Date. Here's both.

Notes-Bibliography System

Footnote/Endnote:

1. OpenAI, ChatGPT, response to "Explain quantum computing basics," May 9, 2026, https://chat.openai.com.

Bibliography Entry:

OpenAI. ChatGPT. Response to "Explain quantum computing basics." May 9, 2026. https://chat.openai.com.

Author-Date System

Reference List:

OpenAI. 2026. ChatGPT. Large language model. https://chat.openai.com.

In-Text:

(OpenAI 2026)

Key Chicago Rules for AI Citations

1. Include your exact prompt — Chicago recommends quoting what you asked.
2. Date is essential — AI responses aren't fixed, so date your access.
3. URL is required — Link to the tool's main page.

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What About AI Tools That Generate Images?

If you used DALL-E, Midjourney, or other AI image generators:

APA Format for AI Images

OpenAI. (2026). Image generated by DALL-E 3 in response to "A sunset over mountains in watercolor style" [AI-generated image]. https://openai.com/dall-e-3

MLA Format for AI Images

"A sunset over mountains in watercolor style" prompt. DALL-E 3, OpenAI, 9 May 2026.

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Do You Always Need to Cite AI?

Yes, cite AI when you:

• Quote or paraphrase AI-generated text
• Use AI to help write sections of your paper
• Generate ideas, outlines, or data using AI
• Use AI-generated images or media

You may not need to cite if:

• You use AI like a spell checker (grammar corrections)
• The AI helped you brainstorm but you wrote everything yourself
• Your professor says it's unnecessary (check your syllabus!)

When in Doubt, Disclose

Most universities now expect transparency about AI use. Even if you don't formally cite it, mention AI assistance in your methodology or acknowledgments section.

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Common Mistakes When Citing AI

❌ Listing AI as the Author's Name

Wrong: ChatGPT. (2026). "Response to my question."

Right: OpenAI. (2026). ChatGPT (May 9 version) [Large language model]. https://chat.openai.com

❌ Forgetting the Version Date

AI tools update constantly. A response from January 2026 might differ from May 2026.

❌ Not Including Your Prompt

Especially for MLA and Chicago, the prompt provides context for what you cited.

❌ Treating AI Text as Your Own

Even if AI "wrote" something, you must cite it. Otherwise, it's academic dishonesty.

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FAQ: Citing AI in Research Papers

Can I use ChatGPT in academic papers?

It depends on your institution's policy. Many universities allow AI assistance with disclosure. Always check your syllabus or ask your professor.

Is using AI considered plagiarism?

Using AI without citation can be considered academic misconduct. Properly citing AI and being transparent about its use is essential.

How do I cite a conversation with AI that has multiple prompts?

For a long conversation, you can cite the overall session or cite each relevant response separately. Include representative prompts in your citations.

What if AI gives wrong information?

You're responsible for verifying AI-generated content. Cite the AI, but also verify facts with credible primary sources.

Should I include the full AI response in my paper?

Not usually. You can include the response in an appendix if your professor requires it, or simply summarize what the AI said in your text.

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Key Takeaways

1. APA treats AI as software — Company as author, include model version in brackets
2. MLA puts the prompt first — Quote or describe what you asked
3. Chicago includes exact prompts — In footnotes and bibliography
4. Always include the date — AI responses change over time
5. When in doubt, disclose — Transparency about AI use is expected in 2026

Citing AI correctly shows academic integrity and helps your readers understand your sources. As AI becomes more common in research, these citation skills will only become more important.

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