MiniMax H3 Max Turbo API

Pricing (per second)

Launch pricing. Billed for the seconds you ask for, any whole number from 5 to 15. First / last frames cost nothing extra. Charged only on success, refunded on failure.

Versus the other two H3 tiers: Turbo is the fastest of the three (seconds versus minutes) and slightly above Lite at 768P ($0.024 vs $0.02/s), but its only image input is a first / last frame; minimax-h3-lite takes up to 9 reference images and 3 reference audio clips; minimax-h3 adds reference video and 2K.

Autenticación

All requests carry the API key in the header:

Authorization: Bearer YOUR_API_KEY

Generate a video

# Text-to-video (prompt only; aspect_ratio applies)
curl -X POST https://api.apimodels.app/v1/video/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "minimax-h3-max-turbo",
    "prompt": "A white kitten chases a butterfly across a sunlit garden, gentle tracking shot, soft afternoon light",
    "duration": 5,
    "resolution": "768p",
    "aspect_ratio": "16:9"
  }'

# Image-to-video: first frame (+ optional last frame). Aspect ratio follows the image.
curl -X POST https://api.apimodels.app/v1/video/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "minimax-h3-max-turbo",
    "prompt": "The camera slowly pulls back, clouds drift overhead, light shifts across the terrain",
    "first_frame_url": "https://example.com/first.jpg",
    "last_frame_url": "https://example.com/last.jpg",
    "duration": 8,
    "resolution": "768p"
  }'

# Poll until completed (result files are kept 7 days)
curl "https://api.apimodels.app/v1/video/generations?task_id=TASK_ID" \
  -H "Authorization: Bearer YOUR_API_KEY"

Two modes, one endpoint

• Text-to-video — prompt only; aspect_ratio can be 21:9 / 16:9 / 4:3 / 1:1 / 3:4 / 9:16, default 16:9.
• Image-to-video (first / last frame) — prompt + first_frame_url, optionally with last_frame_url for first-to-last keyframe generation. The aspect ratio follows the first frame; aspect_ratio is ignored.

Parámetros

Notas

• Async but fast: a 480P 5-second clip completed in 6-11 seconds in our tests. Create returns a taskId; poll GET /v1/video/generations?task_id= every 5-10 seconds until completed, or pass callback_url. Result files are deleted after 7 days — download or re-host promptly.
• No multi-image references, reference video or reference audio: a request carrying images (2 or more) / video_list / audio_list gets a clear 400 at create time — never dropped silently and billed anyway. A single images entry is treated as the first frame.
• Parameter errors (duration outside 5-15, resolution or aspect ratio outside the enums, a last frame without a first) return a synchronous 400 at create time — no task, no charge.
• The content safety checker is on upstream; rejected generations are not charged.

Try it in the Playground