To cite package ‘ellmer’ in publications use:

  Wickham H, Cheng J (2025). _ellmer: Chat with Large Language Models_.
  R package version 0.1.0.9000, ,
  <https://github.com/tidyverse/ellmer>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ellmer: Chat with Large Language Models},
    author = {Hadley Wickham and Joe Cheng},
    year = {2025},
    note = {R package version 0.1.0.9000, },
    url = {https://github.com/tidyverse/ellmer},
  }