How to Use the Wan 2.6 Flash Image to Video API: image to video integration guide (2026)

Wan 2.6 Flash Image to Video is an image to video model by Alibaba: Generate 5, 10 or 15 second videos from one image, at 720P or 1080P, with optional audio. On NamiFusion you can try it in the playground (exact quote shown before you submit), then call it through one unified REST API — about $0.375 per typical run.

TL;DR

· Task type: image to video, provided by Alibaba

· Pricing: about $0.375 per typical run ($1 = 100 credits), pay-as-you-go

· Getting started: playground (exact quote before submit) → create an API key → one POST request

· Tunable parameters: 10 (see the table below)

· No platform watermark; commercial use allowed (per the Terms of Service)

What can you build with Wan 2.6 Flash Image to Video?

Short-form video and ad clips: go from a prompt or a single image to publishable motion content.

Product demos and concept previews: validate storyboards and visual direction cheaply before any shoot.

A social content factory: batch vertical clips and ride trending topics fast.

Remixing existing assets: image-to-video brings static work to life and extends its lifespan.

How do you call this API?

1. Sign up on NamiFusion and create a key on the API Keys page (signup bonus credits can only be used on selected models).
2. Submit a task with the cURL example below, passing your key as a Bearer token.
3. Poll the task status with the returned task_uuid and read the output URLs when completed.

# 1) Submit — returns { "task_uuid": "..." }
curl -X POST "https://www.namifusion.com/api/v1/marketplace/run/alibaba/wan-2.6-flash/image-to-video" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "image_url": [
      "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/08/31/0d2b8fc70ea0.jpeg"
    ],
    "audio": true,
    "prompt": "Cinematic slow camera push-in on the subject as neon lights flicker in the background, subtle head movement, natural blinking, gentle wind in hair and coat, realistic motion, moody atmosphere, detailed reflections, smooth video, high quality",
    "negative_prompt": "blurry, low resolution, distorted face, extra limbs, unnatural motion, flickering, jitter, warped anatomy, oversaturated colors, text, watermark, frame artifacts, abrupt camera movement",
    "resolution": "1080P",
    "duration": 5,
    "shot_type": "single",
    "prompt_extend": true,
    "seed": 12345
  }
}'

# 2) Poll until status is "completed", then read the output URLs
curl "https://www.namifusion.com/api/v1/marketplace/run/tasks/TASK_UUID" \
  -H "Authorization: Bearer YOUR_API_KEY"

What parameters does it take?

image_url (Image): required

audio_url (Audio URL): optional

audio (Auto Generate Audio): optional, default true

prompt (Prompt): optional

negative_prompt (Negative Prompt): optional

resolution (Resolution): optional, default "1080P"

duration (Duration): optional, default 5

shot_type (Shot Type): optional, default "single"

prompt_extend (Enable Prompt Expansion): optional, default true

seed (Seed): optional

How do you write prompts for Wan 2.6 Flash Image to Video?

1. Subject first: lead with the actor and action, then add environment, lighting and style ("an astronaut sprinting through a neon street in the rain, cinematic, shallow depth of field").
2. Concrete nouns beat stacked adjectives: "85mm portrait lens, golden-hour backlight" works far better than "very beautiful, ultra high quality".
3. Change one variable per iteration: pin the seed to reproduce a result, tweak a single phrase at a time so you know what actually moved the output.
4. State negatives positively: instead of "no blur", ask for "sharp focus, crisp details".

How much does it cost?

Pay-per-use in credits. About $0.375 per typical run ($1 = 100 credits); the exact price varies with parameters like resolution or duration, and the playground shows the exact quote before you submit.