How to Cite ChatGPT and Other AI Tools in Chicago 18th edition (notes and bibliography)

Text or other content from ChatGPT, Gemini, Claude, Copilot and other AI tools.

Example in Chicago 18th edition (notes and bibliography)

Cited in the notes only. This style gives it no entry in the bibliography.

Footnote ChatGPT, response to “Describe the theme of nature in Jane Austen’s Mansfield Park,” OpenAI, September 23, 2024, https://chatgpt.com/share/66f1b0a0-d704-8000-be9a-85f53c850607.

Chicago cites a chat in a note, and usually not in the bibliography. For most writing, naming the tool in your text is enough. How to cite AI in Chicago

What Chicago 18th edition (notes and bibliography) includes

These are the details of the example above that the style prints, so they are the ones to collect for your own source.

  • Prompt
  • AI Tool
  • Company
  • Date of the Chat
  • Link

Use Share in the AI tool to get a link to the chat, and note the date, the model and your prompt. Keep the chat: deleting it breaks the link.

The formatting comes from the style's own file, so check the finer points against your guide. What to check by hand in Chicago 18th edition (notes and bibliography).

ChatGPT and Other AI Tools in other styles

APA 7th edition MLA 9th edition Harvard (Cite Them Right 12th edition) IEEE Vancouver

Other sources in Chicago 18th edition (notes and bibliography)

Website Book Journal Article Newspaper Article Book Chapter Thesis/Dissertation Report Video Podcast/Broadcast Magazine Article Software Dataset Patent Legal Case Legislation Bill Regulation Hearing Standard Treaty Conference Paper Manuscript Review Book Review Classic Work Reference Entry Dictionary Entry Encyclopedia Entry Periodical Collection Interview Speech Song Musical Score Graphic Figure Map Performance Event Pamphlet Preprint Document Post Blog Post Personal Communication