wan2.6-i2v-flash

Capabilities

• Animate one first-frame image into a 2-15 second video at 720P or 1080P, with optional driving audio.
• Unified and native asynchronous API formats with the same API key.
• Locally measured output duration with failure refunds and request-time price freezing.

Limitations

• Completed media URLs expire after 24 hours; save the result promptly.
• Generation is probabilistic; a seed does not guarantee identical media.
• Use audio=true or false; silent Flash output has a lower price.

Use cases

• Cinematic advertising and branded storytelling.
• Visual storyboards and reference-directed creative production.
• Automated video creation with task polling and USD usage tracking.

Pricing and billing examples

• 1080P with sound output video | 0.073529411764705882 | output_video_seconds | {"audio":true,"resolution_tier":"1080p"}
• 1080P silent output video | 0.036764705882352941 | output_video_seconds | {"audio":false,"resolution_tier":"1080p"}
• 720P with sound output video | 0.044117647058823529 | output_video_seconds | {"audio":true,"resolution_tier":"720p"}
• 720P silent output video | 0.022058823529411765 | output_video_seconds | {"audio":false,"resolution_tier":"720p"}

Request parameters

API examples

cURL

curl -X POST 'https://api.uniall.ai/v1/videos' \
  -H 'Authorization: Bearer $UNIALL_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"aspect_ratio":"16:9","audio":true,"duration":5,"image":["https://example.com/reference.jpg"],"model":"wan2.6-i2v-flash","prompt_extend":true,"resolution":"1080P","watermark":false}'

Python

import json
import requests

payload = json.loads(r'''{"aspect_ratio":"16:9","audio":true,"duration":5,"image":["https://example.com/reference.jpg"],"model":"wan2.6-i2v-flash","prompt_extend":true,"resolution":"1080P","watermark":false}''')
response = requests.post(
    "https://api.uniall.ai/v1/videos",
    headers={"Authorization": "Bearer " + UNIALL_API_KEY},
    json=payload,
)
response.raise_for_status()
result = response.json()

JavaScript

const response = await fetch("https://api.uniall.ai/v1/videos", {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.UNIALL_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({"aspect_ratio":"16:9","audio":true,"duration":5,"image":["https://example.com/reference.jpg"],"model":"wan2.6-i2v-flash","prompt_extend":true,"resolution":"1080P","watermark":false}),
});

if (!response.ok) throw new Error(`HTTP ${response.status}`);
const result = await response.json();

Frequently asked questions