# Alibaba | Wan 2.7 | Text to Video

Wan 2.7 Text-to-Video generates high-quality videos from text prompts with optional audio synchronization, auto-generated background music, and intelligent prompt enhancement.

## API Information

- **Model Slug:** alibaba-wan-2-7-text-to-video
- **Branded URL:** https://www.eachlabs.ai/alibaba/wan-2-7/alibaba-wan-2-7-text-to-video
- **Provider:** Alibaba
- **Category:** Text to Video
- **Output Type:** video
- **Status:** active
- **Version:** 0.0.1
- **Base Cost:** 1080P pricing: $0.15/sec (default)
- **Estimated Processing Time:** 200 seconds
- **Last Updated:** 2026-04-03
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/alibaba-wan-2-7-text-to-video

## Pricing

- **Charge Type:** dynamic
- **Estimated Price (default example):** $1.05
- **Pricing Details:** 1080P pricing: $0.15/sec (default)

### Pricing Rules

| Condition | Pricing |
| --- | --- |
| resolution == "720P" | 720P pricing: $0.10/sec |
| Rule 2 | 1080P pricing: $0.15/sec (default) |

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| prompt | string | Yes | - | - | Text description of the video to generate. Max 5,000 characters. |
| audio_url | string | No | - | - | Audio file for audio-visual sync (optional). WAV/MP3, 3-30s, max 15MB. |
| negative_prompt | string | No | - | - | Describe what to avoid. Max 500 characters. |
| resolution | string | No | 1080P | ["720P","1080P"] | Output resolution. 720P: lower cost. 1080P: higher quality (default). |
| ratio | string | No | 16:9 | ["16:9","9:16","1:1","4:3","3:4"] | Output aspect ratio. 16:9: landscape (default). 9:16: portrait. 1:1: square. |
| duration | integer | No | 5 | - | Video duration in seconds. Range: 2-15. Default: 5. |
| prompt_extend | boolean | No | true | - | Intelligent prompt rewriting for better quality. Default: true. |
| seed | integer | No | - | - | Seed for reproducibility. Random if omitted. |

## 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": "alibaba-wan-2-7-text-to-video",
  "input": {
    "prompt": "A young girl walks through an enchanted forest filled with glowing particles and fireflies. Soft light beams pass through tall trees as fog drifts slowly. The camera floats gently around her, revealing a small glowing orb in her hands. As she lifts it, the surrounding forest subtly reacts, shimmering with light. Smooth cinematic motion, magical atmosphere, soft depth of field, warm fantasy tones."
  }
}'
```

## 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

Alibaba | Wan 2.7 | Text to Video generates high-quality 1080p videos from text prompts, supporting durations up to 15 seconds with native audio synchronization and multi-reference capabilities. Developed by Alibaba as part of the Wan AI family, this model excels in text-to-video (T2V), image-to-video (I2V), and reference-to-video (R2V) workflows, distinguishing itself through support for up to 5 simultaneous references for complex multi-subject scenes and temporal feature transfer from source videos.

It addresses key challenges in video generation by enabling precise control over first and last frames, joint image-video-audio inputs for subject and voice cloning, and native 1080p output without upscaling artifacts. Ideal for creators needing professional-grade videos with consistent identity preservation and motion dynamics, Alibaba | Wan 2.7 | Text to Video powers efficient production on platforms like each::labs, streamlining workflows from concept to final clip.

## 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.