How to Use the MiniMax H3 Spicy Image to Video API: image to video integration guide (2026)

MiniMax H3 Spicy Image to Video is an image to video model by Minimax: Animate a first-frame image with optional prompt and last-frame guidance. Supports 480p, 540p, 768p and 1080p video, with durations from 3 to 15 seconds. On NamiFusion you can try it in the playground (exact quote shown before you submit), then call it through one unified REST API — about $0.200 per typical run.

TL;DR

· Task type: image to video, provided by Minimax

· Pricing: about $0.200 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: 5 (see the table below)

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

What can you build with MiniMax H3 Spicy 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/minimax/h3/image-to-video-spicy" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "first_frame": [
      "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/08/03/c4e15177f2d1.jpeg"
    ],
    "prompt": "The woman slowly turns her head toward the camera as raindrops fall around her and neon signs flicker in the background. The camera makes a subtle forward dolly-in, her coat and hair move naturally in the breeze, puddles ripple from the rain, and passing traffic creates soft light streaks. Maintain realistic motion, cinematic atmosphere, and consistent character details throughout the shot.",
    "last_frame": [
      "https://d1s3annbwribom.cloudfront.net/marketplace/examples/2026/08/03/20e5465e352c.jpeg"
    ],
    "resolution": "480p",
    "duration": 5
  }
}'

# 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?

first_frame (Image): required

prompt (Prompt): optional

last_frame (Last Frame): optional

resolution (Resolution): optional, default "480p"

duration (Duration): optional, default 5

How do you write prompts for MiniMax H3 Spicy 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 $0.200 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.