1,337 product images: eight Sume image models, per image and total

Generating 1,337 images costs $33.09 on GPT Image 2.5 at low quality and 1K, $33.43 on Grok Image or Imagen 4 Fast, and $125.34 on Qwen Image Max, using Sume's list prices. The spread from cheapest to dearest is $92.25, or 3.8 times. Per-image price is the only thing in this table; quality, size and text rendering differ by model and are not priced here.

Eight models at 1,337 images

Each row multiplies the catalog's per-image price by 1,337. GPT Image 2.5 is tiered by quality and size; the low 1K tier is $0.02475. Ideogram v4.5 is the medium tier.

Picking within a few cents

The three cheapest rows sit within $0.34 of each other ($33.09, $33.43, $33.43), so choose on output, not price. The step up to Flux 2 Pro adds $16.71 over Grok Image (1,337 x 0.0125), and Seedream 5 Lite $25.07 over Grok Image (1,337 x 0.01875).

GPT Image 2.5 at high quality and 4K is $0.2225 per image, which is 1,337 x 0.2225 = $297.48 for the same set. A model's cheapest tier is not its typical tier, so price the tier you will actually order.

Same model, four sizes

On a single model the size matters as much as the choice of model. 1,337 images on Nano Banana 2.1 cost $100.28 at 0.5K, $133.70 at 1K, $200.55 at 2K and $267.40 at 4K. Nano Banana Pro at 1K costs 1,337 x $0.1875 = $250.69.

The cheapest GPT Image 2.5 tier ($33.09) costs about a third of Nano Banana 2.1 at 0.5K ($100.28), but the sizes differ and a 0.5K image is not a product shot. Compare at the size you will publish.

Write the output size into the budget line, not just the model. A quote that says 'images: $50' without a size will be wrong by a factor of up to eight.

Reserve a retake allowance

A catalog is rarely one-pass. Add 15 percent for regenerated images: 1.15 x 1,337 = 1,538 images (rounded up), or 1,538 x $0.025 = $38.45 on Grok Image. Compare that to the first-pass price before you quote a budget.

Before you pick on price

Run a 10-image sample on the two or three cheapest models with your own prompts. The sample costs 10 x $0.02475 = $0.2475 on GPT Image 2.5 low, 10 x $0.025 = $0.25 on Grok Image and 10 x $0.0375 = $0.375 on Flux 2 Pro, under a dollar in all.

• Judge the sample on the property your catalog needs: background cleanliness, text legibility, or consistent lighting.
• If a model needs a second pass on 30 percent of images, its effective price is 1.3 times the list price, which moves Grok Image from $0.025 to $0.0325.
• Re-read the catalog on the day you budget; prices and the list of available models can change.