Seedream 4.0 vs Nano Banana Image Edit: Which image to image API Should You Use? (2026)
Seedream 4.0 vs Nano Banana Image Edit for image to image: pricing, parameters and when to pick which — both are testable in the NamiFusion playground.
Seedream 4.0 and Nano Banana Image Edit are both image to image models on NamiFusion — same REST API, same credit system, near-zero switching cost. The only real question is which to reach for first. Here is a practical decision guide by price, control and use case.
Spec snapshot
· Seedream 4.0 (Doubao): image to image, 4 tunable parameters, about $0.030 per typical run
· Nano Banana Image Edit (Google): image to image, 3 tunable parameters, about $0.040 per typical run
When should you pick which?
· Budget-first / high volume: pick Seedream 4.0 — lower per-run cost compounds at scale.
· Need fine-grained control: pick Seedream 4.0 — more tunable parameters, better for reproducible pipelines.
· Still unsure? Test both: run the same prompt through each model in the playground (exact quote before submit) — that is the fastest answer.
How hard is it to switch?
Near zero on NamiFusion: both models share the same POST /run endpoint — change the model_id and parameter names, and your keys, credits and polling logic all carry over.
FAQ
Can I use both models at once?+
Yes — one API key can call any model in the store; each is billed at its own price.
How current is this comparison?+
Specs and prices come from live model configuration; this page refreshes automatically every day.
Does the free trial cover both models?+
Signup credits currently apply only to selected in-app face-swap features; both of these models are pay-as-you-go, with the exact quote shown in the playground before you submit.