Having trouble getting transparent backgrounds in ChatGPT images

API Model documentation:

gpt-image-2 doesn’t currently support transparent backgrounds. Requests with background: "transparent" aren’t supported for this model.

Because gpt-image-2 always processes image inputs at high fidelity, image input tokens can be higher for edit requests that include reference images. To understand the cost implications, refer to the vision costs section.

ChatGPT: is what it is.