H3 API

MiniMax's video generation model. Call it on 666 AI with the same API key as every other model. Pay as you go; prices follow the upstream in real time and this page updates hourly.

Vendor	MiniMax
Type	video generation
Price	$0.1755 per second
Model ID (use this in your request)	`minimax/h3`

How to call H3

The API is OpenAI-compatible. Replace YOUR-ENDPOINT with the endpoint shown on your API Key page after you sign up, and YOUR-KEY with your key.

curl https://YOUR-ENDPOINT/v1/video/generations \
  -H "Authorization: Bearer YOUR-KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "minimax/h3", "prompt": "a red panda walking in the snow", "duration": 5}'

Video is generated asynchronously: you get a task ID back and poll for the result (see the docs). You're billed for the seconds actually generated; failed jobs are free.

Similar models — price comparison

Model	Price
Kling Video V3 Standard Image To Video	$0.1134 – $0.1701 per second
Happyhorse 1.1	$0.1334 – $0.1725 per second
Hailuo 3	$0.1755 per second
Kling Video V2.6 Pro Image To Video	$0.0945 – $0.189 per second
Kling Video V2.6 Pro Text To Video	$0.0945 – $0.189 per second
Kling Video V3 Turbo Pro Text To Video	$0.189 per second

More models from MiniMax

Model	Price
MiniMax M3	$0.324 per 1M input tokens · $1.3 per 1M output tokens
H3 Max	$0.108 per second
Hailuo 3 Max	$0.108 per second
Music 2.6	$0.2025 per call
Speech 2.8 Hd	$135 per 1M characters
Speech 2.8 Turbo	$81 per 1M characters

FAQ

How much does the H3 API cost?

On 666 AI, H3 costs $0.1755 per second. You pay only for what you use — no monthly fee. Prices follow the upstream in real time; this page updates every hour.

Can I use the official OpenAI SDK?

Yes. The API is OpenAI-compatible: in the OpenAI Python or Node.js SDK just change base_url and api_key, and set model to minimax/h3.

How do I pay?

Bank card (including Google Pay / Apple Pay), USDT / ETH, or bank wire. Top up once and usage is deducted as you go.