Our Drupal expert: How to find your version of CKEditor in Drupal 8
You have your new Drupal 8 site up and running. Now you want to find out what version of CKEditor you have but don't want to have to go digging through the code.
Here's a quick workaround.
Open the edit node page, open console, in Chrome right click -> Inspect.
Then in the console prompt type:
And you have your answer quick and easy.