# Seedance 2.0 Fast

Seedance 2.0 Fast Image To Video is available in the Business API catalog.

- Model ID: `bytedance/seedance-2.0-fast/image-to-video`
- Provider: ByteDance
- Modality: image → video
- Type: Image to Video
- Status: stable
- Delivery: async
- Max resolution: 720p
- Output format: mp4
- Aspect ratios: 1:1, 4:3, 3:4, 16:9, 9:16, 21:9, adaptive

## Authentication

Send your API key in the `X-API-Key` header.

The same key reads the org balance at `GET https://api.dev.pika.art/billing/balance`, which is free to call and confirms the request can be paid for before you submit it.

## Endpoint

```
POST https://api.dev.pika.art/v1/media/bytedance/seedance-2.0-fast/image-to-video
```

## Reference uploads

To use a local file (image, audio, or video) as a model input, first request a presigned upload URL: `POST /v1/media/uploads` with the `X-API-Key` header and a JSON body `{ "content_type": "image/png", "size_bytes": 12345 }`, where `size_bytes` is the file's exact byte length. The response returns `upload_url` (temporary, valid for 5 minutes), `headers`, and `url` (the permanent Pika URL). PUT the file bytes to `upload_url` sending the returned `headers` verbatim — both `Content-Type` and `Content-Length` are signed, and storage returns a bare 403 if either is missing or differs. Then pass `url` into fields such as `image`, `image_url`, `end_image_url`, `image_urls`, `first_frame_image`, or `mask_image_url`.

## Generate

`POST /v1/media/bytedance/seedance-2.0-fast/image-to-video`

```bash
curl -X POST https://api.dev.pika.art/v1/media/bytedance/seedance-2.0-fast/image-to-video \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "The blown-glass tulips slowly bloom and grow: stems elongate, buds swell and unfurl, translucent glass petals expand and open outward while the glossy pearl centers rise and enlarge, fresh glass tendrils sprout from the pale-blue vase. Studio light refracts through the growing glass so specular highlights and caustics shimmer and travel across the petals; plums and green grapes settle gently on the dark reflective table, deep green backdrop. Sound: delicate crystalline glass chimes and soft ringing tones as the flowers grow, gentle airy ambient pad, faint tabletop settle. Elegant glossy candy surrealism, rich saturated color, crisp studio light, smooth organic growth motion, no morphing artifacts.",
  "duration": 5,
  "ratio": "4:3",
  "generate_audio": true,
  "watermark": false,
  "image_url": "https://cdn.pika.art/v2/media/uploads/a7112d4d-62ed-4a11-8dee-74e89c2ec037/a1e8c99b3b064bd5bb30bf7693321b46.png",
  "resolution": "720p"
}'
```

### Request body

| Param | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| `prompt` | string | yes | - | Text prompt describing the video to generate. |
| `duration` | enum | yes | - | Video length in seconds (4-15), or 'auto' to let the model choose. |
| `ratio` | enum | no | - | Output aspect ratio. |
| `generate_audio` | boolean | no | true | Whether to generate audio for the video. |
| `watermark` | boolean | no | false | Whether to add a watermark to the output video. |
| `bitrate_mode` | enum | no | - | Output encode bitrate. 'high' produces a larger, higher-bitrate file; defaults to 'standard'. |
| `image_url` | string | yes | - | URL of the starting-frame image to animate. |
| `end_image_url` | string | no | - | Optional URL of the image to use as the last frame. |
| `resolution` | enum | no | 720p | Output resolution (480p/720p for Fast). |

### Accepted values

| Param | Values | Default |
| --- | --- | --- |
| `ratio` | `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `21:9`, `adaptive` | — |
| `bitrate_mode` | `standard`, `high` | — |
| `resolution` | `480p`, `720p` | `720p` |

Returns a job object, not the final output — normally with status `queued`. Store the `id` and poll until a terminal state. A rejected submit (insufficient balance, rate limit, unpriceable input) still returns the job object, with status `failed` and `error` set. An `Idempotency-Key` replay returns the existing job in its current state — including `failed`, so retry a failure with a fresh key, never the same one.

### Response

**200 OK · queued**

```json
{
  "id": "media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0",
  "status": "queued"
}
```

## Poll status

`GET /v1/media/jobs/{request_id}`

```bash
curl https://api.dev.pika.art/v1/media/jobs/{request_id} \
  -H "X-API-Key: YOUR_API_KEY"
```

Poll the job by id until it reaches a terminal state: `completed` or `failed`.

### The job object

- `id` (string): Unique identifier for the job.
- `status` (enum): One of `queued`, `running`, `completed`, `failed`.
- `output` (object): Present once the job completes.
  - `media_type` (enum): `video`.
  - `output.video.url` (string): URL of the generated video.
- `error` (object): Present if the job failed. `error.code` is the stable machine-readable value to branch on — one of `invalid_input`, `content_moderation`, `provider_error`, `provider_timeout`, `provider_unavailable`, `rate_limited`, `insufficient_balance`, `membership_required`, `cycle_limit_exceeded`, `admission_suspended`, `timed_out`, `internal`. Unrecognized values normalize to `provider_error`. `error.message` is diagnostic text and varies.

### Response

**200 OK · running**

```json
{
  "id": "media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0",
  "status": "running"
}
```

**200 OK · completed**

```json
{
  "id": "media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0",
  "status": "completed",
  "output": {
    "media_type": "video",
    "video": {
      "url": "https://api.dev.pika.art/v1/files/video_8f3a2c91.mp4",
      "content_type": "video/mp4"
    }
  }
}
```

**200 OK · failed**

```json
{
  "id": "media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0",
  "status": "failed",
  "error": {
    "code": "provider_error",
    "message": "upstream generation failed"
  }
}
```

## Get result

`GET /v1/media/jobs/{request_id}/content`

```bash
curl https://api.dev.pika.art/v1/media/jobs/{request_id}/content \
  -H "X-API-Key: YOUR_API_KEY"
```

Once the job completes, fetch a download URL for the generated media.

### Response

**200 OK · content URL**

```json
{
  "url": "https://api.dev.pika.art/v1/files/video_8f3a2c91.mp4"
}
```

## Errors

Errors use conventional HTTP status codes and always return JSON, in one of two shapes. Request-level errors (auth, unknown path, schema validation, idempotency conflict) are `{"message": "..."}`. Submit rejections that occur after the job row is created (insufficient balance, rate limit, unpriceable input, dispatch unavailable) return the full failed job envelope — branch on `error.code`, and retry with a fresh `Idempotency-Key`, since a failed job replays on its key.

- 401 Unauthorized — The API key is missing or invalid. Body: `{"message":"Invalid API key"}`
- 403 Forbidden — An inactive key is rejected with a `{"message"}` body. A submit that the org balance or postpaid cycle limit cannot cover is rejected after the job row exists and returns the failed job envelope. `GET /billing/balance` separates the two: a `200` means the key is active, so the rejection was the balance or the cycle limit. Body: `{"id":"media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0","status":"failed","error":{"code":"insufficient_balance","message":"Insufficient org balance"}}`
- 404 Not Found — No job with that id exists in your org, or the media path names an unknown vendor/model/function. Body: `{"message":"media job not found"}`
- 409 Conflict — The result was requested before the job completed, or an Idempotency-Key header was reused with a different body. Body: `{"message":"media job is not ready"}`
- 422 Unprocessable Entity — The request body failed validation: an invalid enum value, a missing required field, a wrong type, or malformed JSON. The JSON message names the offending field. A schema-valid parameter combination that cannot be priced instead fails after job creation and returns the failed job envelope with error code `invalid_input`. Body: `{"message":"duration: Input should be less than or equal to 15"}`
- 429 Too Many Requests — Org limit reached: requests per minute or day, or concurrent jobs. Returned as the failed job envelope; check the Retry-After header and retry with a fresh Idempotency-Key. Body: `{"id":"media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0","status":"failed","error":{"code":"rate_limited","message":"rate limit exceeded: rpm"}}`
- 503 Service Unavailable — The model rail or a backend dependency is temporarily unavailable. Returned as the failed job envelope; retry with backoff and a fresh Idempotency-Key. Body: `{"id":"media_8f3a2c91-5b7d-4e0a-9c26-31d4f2a8e6b0","status":"failed","error":{"code":"provider_unavailable","message":"media dispatch unavailable"}}`

## Pricing

Video output is metered in tokens, and the token count scales with pixel count — a lower per-token rate at a higher resolution is **not** a lower price. Compare the derived per-second cost, not the rate per 1M tokens.

| Tier | $ / 1M tokens | Video tokens / sec | $ / sec | $ / 5s clip |
| --- | --- | --- | --- | --- |
| 480p · fast | 5.88 | 10,000 | 0.0588 | 0.29 |
| 720p · fast | 5.88 | 21,600 | 0.1270 | 0.64 |

The derived columns use each resolution's nominal token rate; billing settles on the token count the model actually reports.

Only successful generations are charged.

Check the balance against this price before submitting: `GET https://api.dev.pika.art/billing/balance` returns `balance_micro_usd`, which is US dollars multiplied by 1,000,000, and `postpaid` when the org bills by invoice instead. For an active postpaid org, compare the price against `postpaid.cycle.remaining_micro_usd` rather than the prepaid balance. Report a shortfall to the user rather than submitting a request the balance cannot cover.

---

Model page: https://dev.pika.art/models/bytedance/seedance-2.0-fast/image-to-video
API index: https://dev.pika.art/llms.txt