# GPT Image 2 Image Generation

GPT Image 2 Image Generation is available in the Business API catalog.

- Model ID: `openai/gpt-image-2`
- Provider: OpenAI
- Modality: text → image
- Type: Image Generation
- Status: stable
- Delivery: async
- Output format: png

## Authentication

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

## Endpoint

```
POST https://api.dev.pika.art/v1/media/openai/gpt-image-2/text-to-image
```

## 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/openai/gpt-image-2/text-to-image`

```bash
curl -X POST https://api.dev.pika.art/v1/media/openai/gpt-image-2/text-to-image \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "prompt": "The single lowercase word \"pause\" rendered as thick transparent liquid glass floating over a heavily defocused peach-cream curtain lit by soft evening window light — letterforms visible only through refraction bending the fabric folds behind them, crisp caustic white speculars on glyph edges, refraction strongest at the edges, a thin glass ring looping behind and in front of the letters to prove real 3D. Rounded soft letterforms, loose kerning. Palette: peach haze #E8C4A8, cream whites, powder grey. Heavy gaussian softness on the ground, fine grain preventing banding, slight bloom on speculars. Slightly desaturated filmic grade, low contrast while maintaining color, light film grain, warmed whites, editorial print finish, generous negative space. No hard drop shadows, no neon glow, no extra decoration, no other text.",
  "num_images": 1,
  "aspect_ratio": "3:4",
  "output_format": "png",
  "resolution": "1K",
  "quality": "medium"
}'
```

### Request body

| Param | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| `prompt` | string | yes | - | Text prompt describing the image to generate. |
| `num_images` | integer | no | 1 | Number of images to generate. |
| `aspect_ratio` | enum | no | 1:1 | Output aspect ratio. Ignored when 'size' is set. |
| `output_format` | enum | no | png | Image file format of the output. |
| `resolution` | enum | no | 1K | Output resolution. |
| `quality` | enum | no | medium | Rendering quality of the output; 'auto' lets the provider choose. |
| `background` | enum | no | - | Background of the output. 'transparent' needs a png or webp output_format. |
| `size` | string | no | - | Explicit output size as 'WxH' (e.g. '1024x1024'), or 'auto' to let the provider choose. Overrides aspect_ratio and resolution. |

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): `image`.
  - `output.images[].url` (string): URLs of the generated images.
- `error` (object): Present if the job failed. `error.code` is the stable machine-readable value to branch on (e.g. `invalid_input`, `content_moderation`, `insufficient_balance`, `rate_limited`, `provider_error`, `timed_out`); `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": "image",
    "images": [
      {
        "url": "https://api.dev.pika.art/v1/files/img_8f3a2c91.png",
        "content_type": "image/png"
      }
    ]
  }
}
```

**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/img_8f3a2c91.png"
}
```

## 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. 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

- Image output: $22.5 per 1M tokens
- Input: $3.75 per 1M tokens

Only successful generations are charged.

---

Model page: https://dev.pika.art/models/openai/gpt-image-2/text-to-image
API index: https://dev.pika.art/llms.txt