Is there any way to see whether a given prompt was serviced by 4o or Dall-E?

Currently, my prompts seem to be going to the latter still, based on e.g. my source image being very obviously looped through a verbal image description and back to an image, compared to gemini-2.0-flash-exp-image-generation. A friend with a Plus plan has been getting responses from either.

The long-term plan seems to be to move to 4o completely and move Dall-E to its own tab, though, so maybe that problem will resolve itself before too long.