# Seedream 5.5 API

> ByteDance's newest Seedream image model: 1K to 2K pictures from a prompt, or edits from up to 10 reference images, with sharp text and consistent subjects. By ByteDance, on Revana from $0.02 per image.

- Model id: `seedream-5.5`
- Kind: image
- Maker: ByteDance
- Tasks: Text to image, Image to image
- Resolutions: 1K, 1.5K, 2K
- Aspect ratios: 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, 21:9, 2:1, 1:2, 9:21
- Input images: up to 10
- Routes: 3 (starts on the cheapest, falls back automatically)
- Status: live on the API
- Page: https://revana.si/models/seedream-5.5

## Price (per image, USD)

| Setting | Price | Credits |
|---|---|---|
| 1K | $0.02 | 2 |
| 1.5K | $0.02 | 2 |
| 2K | $0.03 | 3 |

100 credits = $1. Charged once, only for the route that succeeds; failed generations cost nothing.

## Request

POST https://api.revana.si/v1/generations with `Authorization: Bearer $REVANA_API_KEY` and an `Idempotency-Key` header: one key per request, made once and sent again on every resend after a timeout, a 429 or a 5xx, so the request is never made or charged twice. After a generation has failed, use a new key.

```json
{
  "model": "seedream-5.5",
  "input": {
    "prompt": "A product photo of a ceramic coffee cup on a linen tablecloth, soft morning light",
    "resolution": "1K",
    "aspect_ratio": "16:9"
  },
  "max_cost_usd": 0.03
}
```

`max_cost_usd` is your cap, the most this request may cost (it lists at $0.02). Poll `GET /v1/generations/{id}` until `status` is `succeeded` or `failed`, then download `GET /v1/generations/{id}/content`. Full API: https://revana.si/llms.txt

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