How to Use the MiniMax H3 Highspeed Text-to-Video API: text to video integration guide (2026)
Learn how to call the MiniMax H3 Highspeed Text-to-Video API on NamiFusion: parameters, pricing (from ≈$0.300) and runnable copy-paste code — try it in the playground first.
MiniMax H3 Highspeed Text-to-Video is a text to video model by Minimax: Generate 4–15 second videos at 768p. On NamiFusion you can try it in the playground (exact quote shown before you submit), then call it through one unified REST API — about $0.300 per typical run.
TL;DR
· Task type: text to video, provided by Minimax
· Pricing: about $0.300 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: 4 (see the table below)
· No platform watermark; commercial use allowed (per the Terms of Service)
What can you build with MiniMax H3 Highspeed Text-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?
- Sign up on NamiFusion and create a key on the API Keys page (signup bonus credits can only be used on selected models).
- Submit a task with the cURL example below, passing your key as a Bearer token.
- 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-highspeed/text-to-video" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"input": {
"prompt": "A cinematic portrait, dramatic rim light, shallow depth of field",
"aspect_ratio": "16:9",
"resolution": "768p",
"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?
prompt (Prompt): required
aspect_ratio (Aspect Ratio): optional, default "16:9"
resolution (Resolution): optional, default "768p"
duration (Duration): optional, default 5
How do you write prompts for MiniMax H3 Highspeed Text-to-Video?
- 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").
- Concrete nouns beat stacked adjectives: "85mm portrait lens, golden-hour backlight" works far better than "very beautiful, ultra high quality".
- 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.
- State negatives positively: instead of "no blur", ask for "sharp focus, crisp details".
How much does it cost?
Pay-per-use in credits. About $0.300 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.
MiniMax H3 Highspeed Text-to-Video
Generate 4–15 second videos at 768p.
Inputs
| Parameter | Required | Type / allowed values / default |
|---|---|---|
prompt | Required | string; max 5000 characters. Text description of the video scene, action, camera movement, and style. |
aspect_ratio | Optional | string; 21:9 / 16:9 / 4:3 / 1:1 / 3:4 / 9:16; default: "16:9". Output aspect ratio. |
resolution | Optional | string; 768p; default: "768p". Output video resolution. |
duration | Optional | integer; 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15; default: 5. Output video duration in seconds. |
Nami accepts up to 5000 prompt characters to match the current MaaS contract. Required prompts must be non-empty.
Listing price
1 USD = 100 credits. Account discounts are applied separately.
768p: $0.06 per output second (6 credits). Output duration: 4–15 whole seconds; default 5.
API usage
Use reachable media URLs. Submit once, then poll task_uuid until completed or failed; successful output.videos contains the video URLs.
POST https://www.namifusion.com/api/v1/marketplace/run/minimax/h3-highspeed/text-to-video
Authorization: Bearer YOUR_NAMIFUSION_API_KEY
Content-Type: application/json
{
"input": {
"resolution": "768p",
"prompt": "A colorful scene with gentle natural movement.",
"duration": 5,
"aspect_ratio": "16:9"
}
}
GET https://www.namifusion.com/api/v1/marketplace/run/tasks/{task_uuid}
Authorization: Bearer YOUR_NAMIFUSION_API_KEY
FAQ
Can I try it for free first?+
Signup bonus credits can only be used on selected models, and eligibility may change. The playground shows the exact quote before submission.
Can I use the output commercially? Is there a watermark?+
Yes, outputs are yours to use commercially, and NamiFusion adds no platform watermark — subject to the Terms of Service and applicable law.
What is the content policy?+
Pornographic content, sexualized content involving a minor, unauthorized use of real people, deceptive impersonation, fraud and false endorsements are prohibited. Lawful, consensual, non-explicit adult themes may be permitted; see the Terms of Service.
How long does a MiniMax H3 Highspeed Text-to-Video task take?+
It depends on parameters — images usually take seconds, videos tens of seconds to minutes. The API returns a task_uuid for polling.
What are the resolution and duration limits?+
See the parameter table above — each model lists its available resolution and duration options there and in the playground.