# Veo 3.1 Lite

> Google's cost-efficient Veo 3.1 variant for high-volume video generation — text-to-video, image-to-video and first/last-frame interpolation at 720p or 1080p, 4/6/8 seconds, with natively synchronized audio on every clip.

- **Provider**: replicate
- **Model ID**: google/veo-3.1-lite
- **Category**: video_generation
- **Credits**: 930 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

- `duration` (integer, optional): Video duration in seconds. Must be 8 when using 1080p resolution. (Default: `8`; Options: `4`, `6`, `8`)
- `image` (string, optional): Input image to animate into a video. Ideal images are 16:9 or 9:16 and 1280x720 or 720x1280, depending on the aspect ratio.
- `aspect_ratio` (string, optional): Video aspect ratio (Default: `16:9`; Options: `16:9`, `9:16`)
- `seed` (integer, optional): Random seed for generation. Doesn't guarantee determinism but slightly improves it.
- `last_frame` (string, optional): Ending image for interpolation. When provided with an input image, creates a smooth transition between the two images.
- `prompt` (string, **required**): Text prompt for video generation. Describe subject, action, camera and style; put dialogue in quotes and describe sound effects and ambience for richer audio.
- `resolution` (string, optional): Resolution of the generated video. 4k is not supported for Veo 3.1 Lite. (Default: `720p`; Options: `720p`, `1080p`)

## Example Request

```json
{
  "model": "google/veo-3.1-lite",
  "input": {
    "duration": 8,
    "aspect_ratio": "16:9",
    "prompt": "A close-up of two old friends reuniting at a train station. The woman gasps, 'I can't believe it's really you!' and they embrace tightly. The sound of a train whistle echoes in the background, ambient station noise, emotional orchestral music swells gently.",
    "resolution": "720p"
  }
}
```

## 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

google, veo, video-generation, text-to-video, image-to-video, audio, budget

## Documentation

https://replicate.com/google/veo-3.1-lite