Runway image credits in dollars, and the Sume per-image rate

Runway's API pricing page lists image models from 1 credit (muse_image) to 41 credits (the top of the gpt_image_2 range), and sets a credit at $0.01, so a Runway image costs $0.01 to $0.41. Sume's image router reserves the provider list price times 1.25 per image. For the two models both list, seedream-5-lite is $0.04 on Runway and $0.044 on Sume, and gpt-image-2 is $0.01 to $0.41 on Runway against a Sume estimate of about $0.264 for one default image.

Runway facts are from its pricing page, read 2026-10-01. Sume facts are from the image docs and its pricing code, before the 5.5% agent fee that applies by default.

What do Runway's image credits cost in dollars?

At $0.01 per credit, multiply by 0.01. Ranges on the page depend on resolution or quality settings.

Which of these models does Sume list, and at what price?

Sume lists models by catalog id. The two that share a name with a Runway row above are below. Sume's gpt-image-2 figure is the estimate for one image at default settings, which varies with size and quality.

Why does Sume's number look different?

Sume's estimate is the provider list price times 1.25, reserved at submit and captured when the image completes. Runway's credit price is its own. A price gap on one model says nothing about the others; compute per image for the models you use. The full ranking is in AI image generator API cost.

How do I see the real price of an image on Sume?

Call GET /v1/catalog for the listed rate and fee, and read the usage.cost on a finished job. If the balance cannot cover the reserve, the request fails with 402 insufficient_credits before any image is made.