Ideogram 4.5 vs GPT Image 2.5 for 9:16 covers with title text

Both models take a 9:16 request on Sume and both have quality tiers, so the choice is price at the tier you need. Ideogram 4.5 bills $0.0375 at low, $0.075 at medium and $0.275 at high per image. GPT Image 2.5 at 720x1280 bills $0.004 at low, $0.00925 at medium, $0.0356 at high and $0.142 at max. The numbers come from the Image API docs and the catalog, with Sume's billable price at list x 1.25.

Neither tier list says which draws sharper title text; render your own title at both and look. Price is the part a table can settle.

What does one cover cost on each?

GPT prices assume an explicit image_size of 720x1280; Ideogram prices are per image at the chosen quality.

What about references?

Ideogram 4.5 takes up to 5 input_references, GPT Image 2.5 up to 16. For a cover that reuses one brand frame, either works. Each GPT reference adds about $0.0175 at square size.

How should I choose?

Run 4 covers per model at the lowest tier, compare the title text, then move only the winner up one tier. Check usage.cost on each response. Prices here are list x 1.25 in dollars per image before whole-cent rounding; the catalog's billable formula reads "list x 1.25, ceil usd cents", so confirm the first charge in usage.cost and budget from the invoice, not from the sum.