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How to Use the MiniMax H3 Lite API

MiniMax H3 Lite API blog cover

Nov 4, 2026

EmpirioLabs AI

Disclosure: This article was written with AI assistance and reviewed by EmpirioLabs AI.

MiniMax H3 Lite is available on EmpirioLabs. It is the lowest-cost model in MiniMax's H3 family: clips of 4 to 15 seconds at 480p or 768p, each with a native stereo audio track, from a prompt, an opening frame, a first and last frame, or a mix of image, video, and audio references.

How it compares

MiniMax H3 LiteMiniMax H3 HighspeedMiniMax H3
Resolutions480p, 768p768p768p, 2K
Clip length4 to 15 seconds4 to 15 seconds4 to 15 seconds
Native stereo audioYesYesYes
Prompt expansion and 2K regenerationNoNoYes

How to call MiniMax H3 Lite

Submit the job, then poll it. This one combines two reference images into one scene at 480p:

curl -X POST https://api.empiriolabs.ai/v1/videos/generations \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "minimax-h3-lite",
    "prompt": "The puppy from the second image chases a ball past the red bicycle from the first image, playful barks.",
    "images": ["https://example.com/bicycle.jpg", "https://example.com/puppy.jpg"],
    "resolution": "480p",
    "duration": 4
  }'
# {"job_id": "...", "status": "processing", "poll_url": "/v1/jobs/..."}

curl https://api.empiriolabs.ai/v1/jobs/JOB_ID \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY"

The mode follows what you attach: no image is text to video, one image is the opening frame, an image plus a last_frame is first and last frame, and two or more images, or any video or audio reference, is reference to video. Set mode only to override that choice.

Operational notes

  • With aspect_ratio left at adaptive, text to video and reference to video come out at 16:9. Choose 9:16 or another ratio for vertical reference clips. Image to video and first and last frame always follow the input image.
  • duration takes whole seconds from 4 to 15. A value outside that range is refused rather than clamped.
  • Reference audio needs an accompanying reference image or video in the same request.
  • Prompt expansion, 2K regeneration and the watermark belong to MiniMax H3. Requests that ask Lite for them are refused, so remove those fields when switching models.

Pricing

MiniMax H3 Lite is pay as you go, billed per second of the generated clip at the resolution you choose, with 480p the lower rate. A reference video is billed for its own duration in addition to the generated clip. Reference audio is not billed, and the first five reference images are included. Current rates are on the model page and the pricing page.

Try it

Run it in the Playground with no code, or read the API reference for every parameter. For faster 768p clips there is MiniMax H3 Highspeed, and for 2K MiniMax H3.

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