MiniMax H3

tk-minimax-h3

POST /v1/videos

Quality-first flagship: highest fidelity, and the only H3 model with 2K output.

• Resolutions: 768P, 2K
• Duration: 4–15 s
• Reference media: images (≤9), videos (≤3), audio (≤3); first/last frames supported
• Free input images: first 5 per task

See the family page for the shared request shape, media limits, aspect-ratio rules, and billing rules: MiniMax H3.

Supported parameters

API field	Type	Required	Values / limit
model	string	Yes	tk-minimax-h3
prompt	string	Yes	Nonempty; at most 7,000 characters
seconds	integer	No	4–15; default 5
metadata.resolution	string	Yes	768P, 2K
metadata.ratio	string	See rules	16:9, 4:3, 1:1, 3:4, 9:16, 21:9, adaptive
metadata.media	array	No	{type, url} entries

Request example

curl https://api.apimart.cc/v1/videos \
  -H "Authorization: Bearer $HIPIX_API_KEY" \
  -H "Content-Type: application/json" \
  --data-raw '{"model": "tk-minimax-h3", "prompt": "A cat running on the beach, cinematic light", "seconds": 5, "metadata": {"resolution": "768P", "ratio": "16:9"}}'

Billing

• Output video: billed per second at the resolution rate (768P or 2K; see the model square).
• Reference video input: billed by duration at the output resolution rate.
• Input images: first 5 free, then per image.
• Reference audio: free. Failed tasks: not billed.