inf-gptel provides a comint-mode based interface to interact with Gptel in Emacs.

Install inf-gptel.el manually or via vc-use-package (emacs 30):

(use-package inf-gptel
  :vc
  (:url "https://github.com/tttuuu888/inf-gptel" :branch "main" :rev :newest))

Add the following to your Emacs configuration:

(require 'inf-gptel)

Then run the interactive shell with:

M-x inf-gptel