xAI retires grok-imagine-image-quality and grok-imagine-image-pro, serving them with a cheaper model

According to xAI's API release notes, requests to grok-imagine-image-quality and grok-imagine-image-pro are now served by grok-imagine-image-2.0-low, which is grok-imagine-image-2.0 with quality set to low, at a lower per-image price. xAI says no request changes are needed.

usage.cost_in_usd_ticks on each response reflects the lower price, and gRPC responses from the xAI SDK report grok-imagine-image-2.0-low as the model. Developers who relied on the output quality of the retired models now get the low setting of the 2.0 model; xAI points to a migration guide for moving to other settings.