MiniMax H3 LoRA API reference
MiniMax H3 video with sound and up to three of your LoRAs
Call MiniMax H3 LoRA 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 40 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-lora/text-to-video
Price
| Option | Credits (per second of output) | US dollars |
|---|---|---|
480p | 7.5 | $0.075 |
540p | 11.25 | $0.1125 |
768p | 15 | $0.15 |
1080p | 30 | $0.3 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
promptRequired | string | — | up to 7,000 characters | Describe the scene, the action, the camera and the sound. Put the soundtrack on its own Audio: line. |
aspect_ratioOptional | string | 16:9 | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21 | Output aspect ratio. |
resolutionOptional | string | 480p | 480p, 540p, 768p, 1080p | Output resolution. |
duration_secondsOptional | integer | 5 | 3 to 15 | Requested output length in whole seconds, from 3 to 15. |
lorasOptional | array<object> | [] | up to 3 items | Up to three LoRA weight files trained for MiniMax H3, each with its own strength. |
seedOptional | integer | — | 0 to 2147483647 | Random seed for controlled comparisons. |
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-lora/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",
"duration_seconds": 5,
"resolution": "480p"
}
}'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-lora/image-to-video
Price
| Option | Credits (per second of output) | US dollars |
|---|---|---|
480p | 7.5 | $0.075 |
540p | 11.25 | $0.1125 |
768p | 15 | $0.15 |
1080p | 30 | $0.3 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
promptRequired | string | — | up to 7,000 characters | Describe what happens after the opening frame: the action, the camera and the sound. |
image_urlRequired | string (uri) | — | — | Opening frame. The clip starts from this image and keeps its aspect ratio. |
last_image_urlOptional | string (uri) | — | — | Optional closing frame the clip should resolve to. |
resolutionOptional | string | 480p | 480p, 540p, 768p, 1080p | Output resolution. |
duration_secondsOptional | integer | 5 | 3 to 15 | Requested output length in whole seconds, from 3 to 15. |
lorasOptional | array<object> | [] | up to 3 items | Up to three LoRA weight files trained for MiniMax H3, each with its own strength. |
seedOptional | integer | — | 0 to 2147483647 | Random seed for controlled comparisons. |
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-lora/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",
"duration_seconds": 5,
"resolution": "480p"
}
}'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"Reference to Video
minimax/h3-lora/reference-to-video
Price
| Option | Credits (per second of output) | US dollars |
|---|---|---|
480p | 9 | $0.09 |
540p | 13.5 | $0.135 |
768p | 20.25 | $0.2025 |
1080p | 40.5 | $0.405 |
Parameters
| Field | Type | Default | Allowed | What it does |
|---|---|---|---|---|
promptRequired | string | — | up to 7,000 characters | Refer to the references by number and describe the shot they should produce, including the sound. |
reference_image_urlsOptional | array<string (uri)> | — | up to 9 items | Reference images, up to nine. Each one adds a per-reference charge. |
reference_video_urlsOptional | array<string (uri)> | — | up to 3 items | Reference videos, up to three and 15 seconds in total. Their seconds are billed like output seconds. |
reference_audio_urlsOptional | array<string (uri)> | — | up to 3 items | Reference audio clips, up to three. Each one adds a per-reference charge. |
aspect_ratioOptional | string | 16:9 | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21 | Output aspect ratio. |
resolutionOptional | string | 480p | 480p, 540p, 768p, 1080p | Output resolution. |
duration_secondsOptional | integer | 5 | 3 to 15 | Requested output length in whole seconds, from 3 to 15. |
lorasOptional | array<object> | [] | up to 3 items | Up to three LoRA weight files trained for MiniMax H3, each with its own strength. |
seedOptional | integer | — | 0 to 2147483647 | Random seed for controlled comparisons. |
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 reference_image_urls. 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-lora/reference-to-video",
"input": {
"prompt": "The man from the reference image jogs across a sunlit rooftop at golden hour and smiles at the camera; smooth tracking shot",
"reference_image_urls": [
"https://media.popnow.ai/influencer/examples/ava.webp"
],
"duration_seconds": 5,
"resolution": "480p"
}
}'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-lora/video-extend
Price
| Option | Credits (per second of output) | US dollars |
|---|---|---|
480p | 7.5 | $0.075 |
540p | 11.25 | $0.1125 |
768p | 15 | $0.15 |
1080p | 30 | $0.3 |
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 comes to rest on this picture. |
resolutionOptional | string | 480p | 480p, 540p, 768p, 1080p | Resolution of the new segment. Match your source clip; it sets how sharp the new part is generated. |
duration_secondsOptional | integer | 5 | 3 to 15 | Length of the new segment in whole seconds, from 3 to 15. The source clip is added on top and is not billed. |
lorasOptional | array<object> | [] | up to 3 items | Up to three LoRA weight files trained for MiniMax H3, each with its own strength, applied to the new segment. Reuse the ones used for the source clip to keep the style consistent. |
seedOptional | integer | — | 0 to 2147483647 | Random seed for controlled comparisons. |
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-lora/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",
"duration_seconds": 5,
"resolution": "480p"
}
}'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"