# 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
- **Base Cost:** $0.40–$2.80 per execution, depending on audio and duration and resolution
- **Estimated Processing Time:** 70 seconds
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/veo3-1-text-to-video-fast

## Pricing

- **Charge Type:** dynamic
- **Estimate:** $0.40–$2.80 per execution, depending on audio and duration and resolution
- **Pricing Details:** 4K, duration 4/duration 4s, no audio: $1.20
- **Pricing Details:** 4K, duration 6/duration 6s, no audio: $1.80
- **Pricing Details:** 4K, duration 8/duration 8s, no audio: $2.40
- **Pricing Details:** 4K, no audio: $2.40
- **Pricing Details:** 4K, duration 4/duration 4s: $1.40
- **Pricing Details:** 4K, duration 6/duration 6s: $2.10
- **Pricing Details:** 4K, duration 8/duration 8s: $2.80
- **Pricing Details:** 4K: $2.80
- **Pricing Details:** duration 4/duration 4s, no audio: $0.4
- **Pricing Details:** duration 6/duration 6s, no audio: $0.6
- **Pricing Details:** duration 8/duration 8s, no audio: $0.8
- **Pricing Details:** no audio: $0.8
- **Pricing Details:** duration 4/duration 4s: $0.6
- **Pricing Details:** duration 6/duration 6s: $0.9
- **Pricing Details:** duration 8/duration 8s: $1.20
- **Pricing Details:** default: $1.20

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | Yes | - | - | Text description of the video to generate. Supports dialogue, sound effects, and ambient noise cues for native audio generation. |
| aspect_ratio | string | No | 16:9 | 16:9, 9:16 | The video's aspect ratio. 16:9 for landscape (default), 9:16 for portrait. |
| duration | integer | No | 8 | 4, 6, 8 | Length of the generated video in seconds. Must be 8 when using 1080p or 4k resolution. |
| resolution | string | No | 720p | 720p, 1080p, 4k | Output video resolution. 1080p and 4k only support 8-second duration. |
| generate_audio | boolean | No | true | - | Whether to generate audio with the video. Set to false for silent video output. |

## 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.