# Veo 3.1 | Text to Video | Fast

A faster and more cost efficient edition of Veo 3.1. Delivers quick, high-quality text-to-video generations ideal for social media content or ad prototypes.

## API Information

- **Model Slug:** veo3-1-text-to-video-fast
- **Branded URL:** https://www.eachlabs.ai/google/veo3-1/veo3-1-text-to-video-fast
- **Provider:** Google
- **Category:** Text to Video
- **Output Type:** video
- **Status:** active
- **Version:** 0.0.1
- **Base Cost:** 720p/1080p (default), 8s, Audio On/default
- **Estimated Processing Time:** 70 seconds
- **Last Updated:** 2026-07-13
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/veo3-1-text-to-video-fast

## Pricing

- **Charge Type:** dynamic
- **Estimated Price (default example):** $1.20
- **Pricing Details:** 720p/1080p (default), 8s, Audio On/default

### Pricing Rules

| Condition | Pricing |
| --- | --- |
| resolution eq_i "4k" AND duration in_i "4,4s" AND generate_audio eq_i "false" | 4k, 4s, Audio Off |
| resolution eq_i "4k" AND duration in_i "6,6s" AND generate_audio eq_i "false" | 4k, 6s, Audio Off |
| resolution eq_i "4k" AND duration in_i "8,8s" AND generate_audio eq_i "false" | 4k, 8s, Audio Off |
| resolution eq_i "4k" AND generate_audio eq_i "false" | 4k, Audio Off, duration default 8s |
| resolution eq_i "4k" AND duration in_i "4,4s" | 4k, 4s, Audio On/default |
| resolution eq_i "4k" AND duration in_i "6,6s" | 4k, 6s, Audio On/default |
| resolution eq_i "4k" AND duration in_i "8,8s" | 4k, 8s, Audio On/default |
| resolution eq_i "4k" | 4k, Audio On/default, duration default 8s |
| duration in_i "4,4s" AND generate_audio eq_i "false" | 720p/1080p (default), 4s, Audio Off |
| duration in_i "6,6s" AND generate_audio eq_i "false" | 720p/1080p (default), 6s, Audio Off |
| duration in_i "8,8s" AND generate_audio eq_i "false" | 720p/1080p (default), 8s, Audio Off |
| generate_audio eq_i "false" | 720p/1080p (default), Audio Off, duration default 8s |
| duration in_i "4,4s" | 720p/1080p (default), 4s, Audio On/default |
| duration in_i "6,6s" | 720p/1080p (default), 6s, Audio On/default |
| duration in_i "8,8s" | 720p/1080p (default), 8s, Audio On/default |
| Rule 16 | Default: 720p, 8s, Audio On = $1.20 |

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | Yes | - | - | The text prompt describing the video you want to generate |
| aspect_ratio | string | No | 16:9 | 9:16,16:9 | The aspect ratio of the generated video. If it is set to 1:1, the video will be outpainted. |
| duration | integer | No | 8 | 4,6,8 | The duration of the generated video in seconds |
| negative_prompt | string | No | - | - | A negative prompt to guide the video generation |
| enhance_prompt | boolean | No | true | - | Whether to enhance the video generation |
| seed | integer | No | - | - | A seed to use for the video generation |
| auto_fix | boolean | No | true | - | Whether to automatically attempt to fix prompts that fail content policy or other validation checks by rewriting them |
| resolution | string | No | 720p | 720p,1080p | The resolution of the generated video |
| generate_audio | boolean | No | true | - | Whether to generate audio for the video. If false, %33 less credits will be used. |

## Example Request

```bash
curl -X POST https://api.eachlabs.ai/v1/prediction/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "veo3-1-text-to-video-fast",
  "input": {
    "prompt": "A runner on an Olympic track sprints toward the camera, smiling and breathing hard. As they pass close, they say: “VE0 3.1 just dropped on eachlabs! You have to check it out — it’s unreal!” Then they keep running forward. Realistic crowd noise, footsteps, and wind sound."
  }
}'
```

## Output Schema

Response returned by `GET /v1/prediction/{id}` when the job completes:

```json
{
  "status": "success",
  "predictionID": "string",
  "output": "string (URL of generated video)",
  "metrics": {
    "predict_time": "number (seconds)"
  }
}
```

## Polling

```bash
curl https://api.eachlabs.ai/v1/prediction/{PREDICTION_ID} \
  -H "Authorization: Bearer YOUR_API_KEY"
```

| Status | Meaning |
|--------|---------|
| `processing` | Still running — poll again |
| `success` | Done — read `output` |
| `error` | Failed — read `message` / `details` |

## Webhook (alternative to polling)

Pass `"webhook_url": "https://your.host/path"` in the create request. Eachlabs POSTs this payload when the job ends:

```json
{
  "exec_id": "prediction-uuid",
  "status": "succeeded",
  "output": "https://...",
  "error": ""
}
```

`status` is `"succeeded"` or `"failed"`. `exec_id` equals the `predictionID` from create. Return 2xx within 30 seconds.

## Errors

Error body: `{ "status": "error", "message": "...", "details": "..." }`

| Code | Meaning |
|------|---------|
| `400` | Invalid input |
| `401` | Missing / invalid `Authorization` bearer token |
| `404` | Unknown model or prediction id |
| `429` | Rate limit — 100 creates / min, 10 concurrent per key |
| `5xx` | Retry with backoff |

## Overview

**veo3.1-text-to-video-fast — Text to Video AI Model**

Developed by Google as part of the Veo 3.1 family, **veo3.1-text-to-video-fast** is a high-speed text-to-video AI model that generates quick, cost-efficient videos with native audio, perfect for social media creators and marketers needing rapid prototypes without sacrificing quality. This fast variant prioritizes 30% quicker inference and 80% lower costs compared to standard Veo 3.1 modes, delivering 720p or 1080p clips in about 50-70 seconds for 8-second videos. Ideal for **Google text-to-video** workflows, it supports text-to-video, image-to-video, and first-last frame generation, enabling developers and designers to iterate on dynamic content like TikTok reels or ad previews using simple prompts.

## Usage Notes

- API Base URL: `https://api.eachlabs.ai/v1`
- Authentication: send `Authorization: Bearer YOUR_API_KEY`. Generate a key from the Eachlabs dashboard at https://www.eachlabs.ai/dashboard/api-keys.
- File-typed parameters (`*_url`, `image_url`, `video_url`, `audio_url`, etc.) accept publicly-reachable HTTPS URLs only. Upload your asset first (GCS / S3 / your CDN) and pass the resulting URL. Data-URIs and localhost URLs are rejected.
- For structured parameters (arrays / objects) send real JSON values, not stringified payloads.
- Monetary values are reported in USD; per-token / per-megapixel rates may be billed in micro-cents internally.
- Prefer `webhook_url` over polling for long-running predictions — see the Webhook Callback section.