Seedream 5.0 Lite uses per-generation pricing at $0.035 per generation.
The max_images parameter (1–15) controls how many images are produced per API call and directly scales the cost. For example, generating 4 images in one request costs 4× the base rate.
All other parameters — aspect ratio, size, optimize_prompt, and watermark — do not affect pricing.
Billing is pay-as-you-go with no minimum commitment. You are only charged for successful generations (HTTP 200). Failed requests are not billed.