MiniMax H3 Max API reference
Fast clips with ambience, effects and music
Call MiniMax H3 Max from your own code with one PopNow API key. Below are the exact model IDs to send, every input field the model accepts, what each request costs in credits, and a request you can paste into a terminal.
At a glance
- Made by
- MiniMax
- Output
- Video
- From
- 7.5 credits per second of output ($0.075)
- Typical time
- about 31 s
1 credit = $0.01. A task holds the highest possible charge when it is accepted and settles the real amount when it finishes, rounded up to whole credits; failed tasks are not charged. Ask POST /api/v1/jobs/quote for the exact figure before you run.
Create Video
minimax/h3-max/text-to-video
Price
| Option | Credits (per second of output) | US dollars |
|---|---|---|
480p | 7.5 | $0.075 |
768p | 12 | $0.12 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
promptRequired | string | — | up to 7,000 characters | Describe the subject, action, camera, and mood of the shot. |
aspect_ratioOptional | string | 1:1 | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | Output aspect ratio. |
duration_secondsOptional | integer | 8 | 5 to 15 | Requested output length in seconds, from 5 to 15. |
resolutionOptional | string | 768p | 480p, 768p | Output resolution. |
enable_prompt_expansionOptional | boolean | false | — | Expand the prompt into a fuller description before generating. Requests with it on add a flat per-request prompt-expansion fee. |
Example request
This request runs as it is; any field you leave out uses its default. Put your key in POPNOW_API_KEY first.
curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask" \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"model": "minimax/h3-max/text-to-video",
"input": {
"prompt": "A paper boat drifts down a rain-soaked street at dusk, neon signs reflecting in the water, slow tracking shot at ground level",
"enable_prompt_expansion": false,
"resolution": "768p",
"duration_seconds": 8
}
}'The response carries a taskId straight away. Read the result with GET /api/v1/jobs/recordInfo, or add callBackUrl to be notified.
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
-H "Authorization: Bearer $POPNOW_API_KEY"Image to Video
minimax/h3-max/image-to-video
Price
| Option | Credits (per second of output) | US dollars |
|---|---|---|
480p | 7.5 | $0.075 |
768p | 12 | $0.12 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
image_urlRequired | string (uri) | — | — | Opening frame. It fixes the composition and the subject the clip starts from. |
promptRequired | string | — | up to 7,000 characters | Describe what happens after the opening frame: the action, the camera, and the mood. |
last_image_urlOptional | string (uri) | — | — | Optional closing frame the clip should resolve to. It may only be sent together with an opening frame. |
duration_secondsOptional | integer | 8 | 5 to 15 | Requested output length in seconds, from 5 to 15. |
resolutionOptional | string | 768p | 480p, 768p | Output resolution. |
enable_prompt_expansionOptional | boolean | false | — | Expand the prompt into a fuller description before generating. Requests with it on add a flat per-request prompt-expansion fee. |
Example request
This request runs as it is; any field you leave out uses its default. Put your key in POPNOW_API_KEY first.
The example uses PopNow sample files in image_url. Replace them with your own public HTTPS links, uploads or saved assets.
curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask?wait=60" \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"model": "minimax/h3-max/image-to-video",
"input": {
"prompt": "He lands softly on the rooftop, laughs and turns toward the camera while the balloons sway in the evening breeze; slow push-in",
"image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
"enable_prompt_expansion": false,
"resolution": "768p",
"duration_seconds": 8
}
}'The response carries a taskId straight away. Read the result with GET /api/v1/jobs/recordInfo, or add callBackUrl to be notified.
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
-H "Authorization: Bearer $POPNOW_API_KEY"Extend Video
minimax/h3-max/video-extend
Price
| Option | Credits (per second of output) | US dollars |
|---|---|---|
480p | 7.5 | $0.075 |
768p | 12 | $0.12 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
promptRequired | string | — | up to 7,000 characters | Describe what happens next: the action that follows, the camera move and the sound. |
video_urlRequired | string (uri) | — | — | The clip to continue: MP4, MOV or WebM, up to 60 seconds. Its last frame opens the new segment, and the result is your clip with the new segment joined on. |
last_image_urlOptional | string (uri) | — | — | Optional target end frame: the new segment closes on this image. |
duration_secondsOptional | integer | 8 | 5 to 15 | Length of the new segment in seconds, from 5 to 15. The source clip is added on top and is not billed. |
resolutionOptional | string | 768p | 480p, 768p | Resolution of the new segment. It sets how sharp the new part is generated; match your source clip. |
enable_prompt_expansionOptional | boolean | false | — | Expand the prompt into a fuller description before generating. Requests with it on add a flat per-request prompt-expansion fee. |
Example request
This request runs as it is; any field you leave out uses its default. Put your key in POPNOW_API_KEY first.
The example uses PopNow sample files in video_url. Replace them with your own public HTTPS links, uploads or saved assets.
curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask" \
-H "Authorization: Bearer $POPNOW_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: $(uuidgen)" \
-d '{
"model": "minimax/h3-max/video-extend",
"input": {
"prompt": "The flowers keep opening while the camera slowly pulls back to reveal a sunlit meadow",
"video_url": "https://media.popnow.ai/effects/flower-bloom-1abd6efb.mp4",
"enable_prompt_expansion": false,
"resolution": "768p",
"duration_seconds": 8
}
}'The response carries a taskId straight away. Read the result with GET /api/v1/jobs/recordInfo, or add callBackUrl to be notified.
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
-H "Authorization: Bearer $POPNOW_API_KEY"