Minimax MiniMax H3 Max text to video API | Pricing & Docs

minimax/minimax-h3-max/text-to-video

MiniMax H3 Max text to video creates 5-15s clips from a prompt alone—often a 10s video in roughly a dozen seconds—with native audio at 480p or 768p.

1. Get started

Use RunComfy's API to run minimax/minimax-h3-max/text-to-video. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/minimax/minimax-h3-max/text-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Night city time-lapse feel in one continuous take: rain-slick downtown avenue, neon reflecting on wet asphalt, a cyclist weaving through traffic as camera tracks low and smooth. Cinematic teal-and-amber grade. Audio: rain, tires on wet road, distant sirens low in the mix. No text, no watermark.",
    "prompt_expansion_mode": "balanced"
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/minimax/minimax-h3-max/text-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Night city time-lapse feel in one continuous take: rain-slick downtown avenue, neon reflecting on wet asphalt, a cyclist weaving through traffic as camera tracks low and smooth. Cinematic teal-and-amber grade. Audio: rain, tires on wet road, distant sirens low in the mix. No text, no watermark.",
    "prompt_expansion_mode": "balanced"
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server-side fetches (no login/cookies required) and isn't rate-limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre-signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "prompt",
    "prompt_expansion_mode"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text prompt for video generation: scene, motion, camera, style, and optional audio.",
      "type": "string",
      "default": "Night city time-lapse feel in one continuous take: rain-slick downtown avenue, neon reflecting on wet asphalt, a cyclist weaving through traffic as camera tracks low and smooth. Cinematic teal-and-amber grade. Audio: rain, tires on wet road, distant sirens low in the mix. No text, no watermark."
    },
    "duration": {
      "title": "Duration (seconds)",
      "description": "The duration of the video in seconds.",
      "type": "integer",
      "default": 8,
      "minimum": 5,
      "maximum": 15
    },
    "resolution": {
      "title": "Resolution",
      "description": "The native generation resolution of the video.",
      "type": "string",
      "enum": [
        "480p",
        "768p"
      ],
      "default": "768p"
    },
    "aspect_ratio": {
      "title": "Aspect Ratio",
      "description": "The aspect ratio of the generated video.",
      "type": "string",
      "enum": [
        "21:9",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "16:9"
    },
    "prompt_expansion_mode": {
      "title": "Prompt Expansion Mode",
      "description": "How much effort to spend rewriting the prompt before generation. balanced returns quickly; quality spends longer on a richer prompt.",
      "type": "string",
      "enum": [
        "balanced",
        "quality"
      ],
      "default": "balanced"
    },
    "seed": {
      "title": "Seed",
      "description": "Random seed. A random seed is selected when omitted. Use -1 for random.",
      "type": "integer",
      "default": -1
    },
    "enable_safety_checker": {
      "title": "Enable Safety Checker",
      "description": "If set to true, the safety checker will be enabled.",
      "type": "boolean",
      "default": true
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

RunComfy

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

1. Get started

Use RunComfy's API to run minimax/minimax-h3-max/text-to-video. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/minimax/minimax-h3-max/text-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Night city time-lapse feel in one continuous take: rain-slick downtown avenue, neon reflecting on wet asphalt, a cyclist weaving through traffic as camera tracks low and smooth. Cinematic teal-and-amber grade. Audio: rain, tires on wet road, distant sirens low in the mix. No text, no watermark.",
    "prompt_expansion_mode": "balanced"
  }'

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/minimax/minimax-h3-max/text-to-video \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "Night city time-lapse feel in one continuous take: rain-slick downtown avenue, neon reflecting on wet asphalt, a cyclist weaving through traffic as camera tracks low and smooth. Cinematic teal-and-amber grade. Audio: rain, tires on wet road, distant sirens low in the mix. No text, no watermark.",
    "prompt_expansion_mode": "balanced"
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "prompt",
    "prompt_expansion_mode"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text prompt for video generation: scene, motion, camera, style, and optional audio.",
      "type": "string",
      "default": "Night city time-lapse feel in one continuous take: rain-slick downtown avenue, neon reflecting on wet asphalt, a cyclist weaving through traffic as camera tracks low and smooth. Cinematic teal-and-amber grade. Audio: rain, tires on wet road, distant sirens low in the mix. No text, no watermark."
    },
    "duration": {
      "title": "Duration (seconds)",
      "description": "The duration of the video in seconds.",
      "type": "integer",
      "default": 8,
      "minimum": 5,
      "maximum": 15
    },
    "resolution": {
      "title": "Resolution",
      "description": "The native generation resolution of the video.",
      "type": "string",
      "enum": [
        "480p",
        "768p"
      ],
      "default": "768p"
    },
    "aspect_ratio": {
      "title": "Aspect Ratio",
      "description": "The aspect ratio of the generated video.",
      "type": "string",
      "enum": [
        "21:9",
        "16:9",
        "4:3",
        "1:1",
        "3:4",
        "9:16"
      ],
      "default": "16:9"
    },
    "prompt_expansion_mode": {
      "title": "Prompt Expansion Mode",
      "description": "How much effort to spend rewriting the prompt before generation. balanced returns quickly; quality spends longer on a richer prompt.",
      "type": "string",
      "enum": [
        "balanced",
        "quality"
      ],
      "default": "balanced"
    },
    "seed": {
      "title": "Seed",
      "description": "Random seed. A random seed is selected when omitted. Use -1 for random.",
      "type": "integer",
      "default": -1
    },
    "enable_safety_checker": {
      "title": "Enable Safety Checker",
      "description": "If set to true, the safety checker will be enabled.",
      "type": "boolean",
      "default": true
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

MiniMax H3 Max text to video creates 5-15s clips from a prompt alone—often a 10s video in roughly a dozen seconds—with native audio at 480p or 768p.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

MiniMax H3 Max text to video creates 5-15s clips from a prompt alone—often a 10s video in roughly a dozen seconds—with native audio at 480p or 768p.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

MiniMax H3 Max text to video: Prompt to Clip on Models and API | RunComfy

MiniMax H3 Max text to video creates 5-15s clips from a prompt alone—often a 10s video in roughly a dozen seconds—with native audio at 480p or 768p.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

MiniMax H3 Max text to video: Prompt to Clip on Models and API | RunComfy

MiniMax H3 Max text to video creates 5-15s clips from a prompt alone—often a 10s video in roughly a dozen seconds—with native audio at 480p or 768p.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema