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MiniMaxMediumUltra

MiniMax H3 Max Text to Video

MiniMax H3 Max text-to-video via Fal.AI. fal's post-trained variant of MiniMax Hailuo-03 (H3), tuned for stronger prompt adherence and better aesthetics โ€” 5-15 second clips with native audio, six aspect ratios (21:9 through 9:16), and 480P/768P native or 1080P refined output.

930 credits
per 5s 768P video โ€” billed per second (480P 116/s, 768P 186/s, 1080P 372/s)
Post-trained H3 variant with stronger prompt adherence and aesthetics
Native audio generated alongside the video
5-15 second duration, billed per second
480P/768P native generation or 1080P refinement

Run it right now

Test this model instantly in the Console Playground โ€” no code required

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Use with AI Assistant

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Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "minimax/h3-max/text-to-video",
  "input": {
    "prompt": "A white kitten chases a butterfly across a sunlit garden. Gentle camera tracking, natural movement, soft afternoon light filtering through the leaves.",
    "duration": 5,
    "resolution": "768P",
    "aspect_ratio": "16:9"
  }
}'

Parameters

ParameterTypeRequiredDefaultDescription
promptstringYes-Text prompt for video generation (up to 50,000 characters).
durationintegerNo5The duration of the video in seconds (5-15), billed per second.
resolutionstringNo768P480P and 768P are native generation modes; 1080P is latent refinement from a native 768P source.
480P768P1080P
aspect_ratiostringNo16:9The aspect ratio of the generated video.
21:916:94:31:13:49:16
prompt_expansion_modestringNobalancedHow much effort to spend rewriting the prompt before generation. 'disabled' skips expansion, 'balanced' returns in about a second, 'quality' spends up to ~30s on a richer prompt.
disabledbalancedquality
enable_safety_checkerbooleanNotrueIf set to true, the safety checker will be enabled.
seedintegerNo-Random seed. A random seed is selected when omitted.

Common Parameters

Common parameters used when calling POST /v1/predictions.

ParameterTypeRequiredDefaultDescription
modelstringYes-Model identifier
inputobjectYes-Object containing the model-specific parameters from the table above
output_folderstringNo-Folder path for output files (max 256 chars, '..' not allowed)
webhook_urlstringNo-Webhook URL to call on completion
is_publicbooleanNofalseIf true, output files are also available via permanent public URLs

Examples

Garden scene with natural motion

A gentle nature scene with smooth camera tracking at the default 768P.

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "minimax/h3-max/text-to-video",
  "input": {
    "prompt": "A white kitten chases a butterfly across a sunlit garden. Gentle camera tracking, natural movement, soft afternoon light filtering through the leaves.",
    "duration": 5,
    "resolution": "768P",
    "aspect_ratio": "16:9"
  }
}'

Wide cinematic hero shot

An ultra-wide 21:9 shot refined to 1080P.

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "minimax/h3-max/text-to-video",
  "input": {
    "prompt": "A sleek electric car drives along a coastal highway at sunset, wide cinematic framing, dramatic lighting.",
    "duration": 10,
    "resolution": "1080P",
    "aspect_ratio": "21:9"
  }
}'

Tips & Best Practices

1Iterate at 480P (116/s) and render the final at 768P or 1080P.
2Set prompt_expansion_mode to 'disabled' when you want the prompt used verbatim.
3Billing is per second of duration โ€” 15s at 1080P costs three times a 5s clip.
4Audio is generated natively; describe sounds and dialogue in the prompt.

Use Cases

Marketing and hero videos where prompt fidelity matters
Wide (21:9) cinematic shots for landing pages
Vertical (9:16) social clips with native audio
Storyboard previews at 480P before a 1080P final