gpt-image-2 pricing on RelayDance: why image output is free and you pay only for input
On RelayDance, gpt-image-2 bills only for input: image output is free, so you are charged for what you send, not what the model returns. Image-to-image starts from about CNY 0.035, and 4K and 1K output cost the same because resolution does not change output billing. Live per-model rates are published at relaydance.com/models, and the API is OpenAI-compatible.
How gpt-image-2 billing works
gpt-image-2 charges for input only, and image output is free. Because output carries no cost, choosing a higher output resolution does not raise your bill: 4K and 1K output cost the same. Image-to-image requests begin from about CNY 0.035, reflecting the input you provide rather than the generated result. This structure means the size of your prompt and any source image drive the price, not the pixels returned. For current figures, consult relaydance.com/models, where per-model rates are listed. According to the official relaydance.com/docs, 「Set base_url to https://relaydance.com/v1 and keep your OpenAI SDK」, so integrating gpt-image-2 requires no new client library.
What you pay for and what you do not
You pay for request input, and you never pay for failed work. Billing is pay-as-you-go, calculated on the input side, while image output remains free. If a request does not complete, no charge applies: according to the official relaydance.com docs, 「Failed or errored requests are never billed」. This applies across the platform, giving predictable costs during testing and iteration. To summarize the gpt-image-2 model:
- Image output: free
- Input: billed
- Image-to-image: from about CNY 0.035
- 4K output vs 1K output: same cost
- Failed or errored requests: never billed
gpt-image-2 compared with Seedance video rates
gpt-image-2 uses input-only image billing, while Seedance video models are priced per second or per clip. The table below lists concrete rates from relaydance.com/models:
| Model / tier | Price | Unit |
|---|---|---|
| gpt-image-2 image output | Free | output |
| gpt-image-2 image-to-image | from about CNY 0.035 | per request input |
| Seedance 2.0 720p | about $0.190 | per second |
| Seedance 2.0 1080p | about $0.470 | per second |
| Seedance Fast | about $0.152 | per second |
| Seedance native 4K | about $4.90 | per 5-second clip |
How to call gpt-image-2 on RelayDance
Calling gpt-image-2 follows the OpenAI-compatible flow with two changes: the base URL and your API key. Follow these steps:
- Create an API key at
https://relaydance.com/console. - Set
base_urltohttps://relaydance.com/v1and keep your OpenAI SDK. - Send
Authorization: Bearer YOUR_API_KEYwith each request. - Call
POST /v1/images/generationsto generate an image. - Pay using USDT or Stripe card under pay-as-you-go billing.
Because failed or errored requests are never billed, you can iterate on prompts without accumulating charges for incomplete work. See relaydance.com/docs for full details.
FAQ
Is gpt-image-2 image output really free? Yes: image output is free, and only input is billed, per relaydance.com/models.
Does 4K cost more than 1K? No: 4K and 1K output cost the same, because output is not billed.
Am I charged if a request fails? No: according to the official relaydance.com docs, 「Failed or errored requests are never billed」.
According to the official relaydance.com docs: "Failed or errored requests are never billed"
According to the official relaydance.com/docs docs: "Set base_url to https://relaydance.com/v1 and keep your OpenAI SDK"
Key facts and figures
| Item | Value | Source |
|---|---|---|
| Seedance 2.0 720p price | about $0.190 / second | relaydance.com/models |
| Seedance 2.0 1080p price | about $0.470 / second | relaydance.com/models |
| Seedance Fast price | about $0.152 / second | relaydance.com/models |
| Seedance native 4K price | about $4.90 per 5-second clip | relaydance.com/models |
| gpt-image-2 image billing | image output is free, only input is billed; image-to-image from about CNY 0.035; 4K and 1K output cost the same | relaydance.com/models |
| API protocol | OpenAI-compatible; set base_url to https://relaydance.com/v1 | relaydance.com/docs |
| Failed requests | failed or errored requests are never billed | relaydance.com/docs |
Data verified 2026-06-29; live prices are on the official /models page.