# Luma Ray Flash 2 720p

> Generate 5s and 9s 720p videos, faster and cheaper than Ray 2

- **Provider**: replicate
- **Model ID**: luma/ray-flash-2-720p
- **Category**: video_generation
- **Credits**: 700 per request
- **Pricing Type**: input_based

## API Endpoint

Base URL: https://api.core.today/v1

### Create Prediction
POST /predictions

### Get Status
GET /predictions/{job_id}

### Cancel
DELETE /predictions/{job_id}

## Authentication

Header: `X-API-Key: YOUR_API_KEY`

## Input Parameters

- `start_image_url` (string, optional): Deprecated: Use start_image instead
- `loop` (boolean, optional): Whether the video should loop, with the last frame matching the first frame for smooth, continuous playback. (Default: `False`)
- `end_image_url` (string, optional): Deprecated: Use end_image instead
- `prompt` (string, **required**): Text prompt for video generation
- `end_image` (string, optional): An optional last frame of the video to use as the ending frame.
- `concepts` (array, optional): List of camera concepts to apply to the video generation. Concepts include: truck_left, pan_right, pedestal_down, low_angle, pedestal_up, selfie, pan_left, roll_right, zoom_in, over_the_shoulder, orbit_right, orbit_left, static, tiny_planet, high_angle, bolt_cam, dolly_zoom, overhead, zoom_out, handheld, roll_left, pov, aerial_drone, push_in, crane_down, truck_right, tilt_down, elevator_doors, tilt_up, ground_level, pull_out, aerial, crane_up, eye_level
- `aspect_ratio` (string, optional): Aspect ratio of the generated video (Default: `16:9`; Options: `1:1`, `3:4`, `4:3`, `9:16`, `16:9`, `9:21`, `21:9`)
- `start_image` (string, optional): An optional first frame of the video to use as the starting frame.
- `duration` (integer, optional): Duration of the video in seconds (Default: `5`; Options: `5`, `9`)

## Example Request

```json
{
  "model": "luma/ray-flash-2-720p",
  "input": {
    "duration": 5,
    "aspect_ratio": "16:9",
    "prompt": "A cinematic anime character intimate closeup, she is sitting at a cafe on a busy city street in the morning, it is cold",
    "loop": false
  }
}
```

## Response Format

```json
{
  "job_id": "abc123",
  "status": "pending",
  "provider": "replicate",
  "model": "black-forest-labs/flux-schnell",
  "created_at": "2026-01-01T00:00:00Z",
  "result": null,
  "error": null
}
```

Status values: `pending`, `processing`, `completed`, `failed`, `cancelled`

## Usage Flow

1. POST /predictions with model and input → receive job_id
2. Poll GET /predictions/{job_id} until status is `completed` or `failed`
3. Result contains output URL(s) or data

## Output Type

url

## Tags

luma, ray, video-generation, fast, image-to-video, text-to-video, keyframes

## Documentation

https://replicate.com/luma/ray-flash-2-720p