Yes, all the costs should be collected together in documentation for the image models. Per-model, even.
- prompt text you send
- reference images you send (edits endpoint)
- price increase for higher input quality
- image outputs you receive, by size and output quality
- with exact token consumption at the pricing instead of rounded off pricing
I attempt to collect prices you will pay step-by-step in this post.
That forum topic has not been updated for the reduced output price of the newer gpt-image-1-mini model (just like API documentation itself hasn’t been updated for the model by OpenAI). Any attempt at producing helpful developer info here is futile in the forum format - it quickly scrolls from being found due to all the bugs.