Show "usage" for Image Generation/Variations

[ustincameron]

The text completion models contain a "usage" object that allows us to see how much the generation costs, but it seems the image generation is lacking the same object.

	"usage": {
		"prompt_tokens": 54,
		"completion_tokens": 23,
		"total_tokens": 77
	}

Any documentation around this credit cost or thoughts on adding this?

[alexrudall]

Hi @ustincameron, thanks for this, I've raised it over at the OpenAI forum so let's see what they come back with. The DALLE API is still in beta so I expect they will add it at some point.