MiniMax H3 LoRA API

Introduction

MiniMax H3 LoRA Image to video starts a clip from your opening frame and animates it for 3 to 15 seconds with a stereo soundtrack, with up to three of your own LoRA files loaded on the open-weights MiniMax H3. Add a closing frame to steer where the shot ends. Output is 480p, 540p, 768p or 1080p and keeps the shape of your picture.

Choose a mode by starting material

Key features

The first frame is yours

With the prompt written as what happens next, the clip opens on your exact picture. In our control test a full-length portrait on a plain backdrop held frame for frame, then the subject raised her arms and turned around as asked, with no LoRA and again with a LoRA at 0.6.

LoRAs on top of a fixed start

Load a character, style or motion LoRA to change how the scene moves or looks while the opening frame pins the subject. Up to three files per request, each with its own strength from 0 to 4.

Request parameters

Pricing

Prices are in credits, the same credits you use on the website (1 credit = $0.01). The hold is taken when the task is accepted and settled to the actual charge when it finishes; failed tasks are refunded.

Each task is rounded up to whole credits, so one run at the lowest tier costs 38 credits for a 5-second clip ($0.38).

For an exact number before you run, send the same body to POST /jobs/quote.

Use cases

Bring a finished still to life

Take an approved photo or render, keep it as the first frame and add movement, camera and sound. A realism LoRA at 0.8 keeps skin and fabric believable when the subject starts to move.

Planned start and end poses

Send both an opening and a closing frame for a reveal, a turn or a change of position, and let the model fill the motion in between. It is the most controlled way to get a specific ending.

Prompt guide & pro tips

Write what happens next, not a new scene

The prompt should continue the picture. In our testing, a prompt that moved the subject to a different room, combined with a concept LoRA at 1, replaced the opening frame entirely. The same frame held when the prompt described motion inside the existing shot.

Lower the scale before you blame the model

If the clip drifts from your frame, drop the strongest LoRA to 0.6 before rewriting anything. Style LoRAs are usually safe at 1; concept and anatomy LoRAs are the ones that take over.

Frame the picture for the clip you want

There is no aspect ratio field here: the clip keeps your frame's shape. Crop to 16:9 or 9:16 before you send it, and leave room in the frame for the movement you are asking for.

API quick start

Call the MiniMax H3 LoRA API in three steps

1. Create an API key. Sign in to PopNow and create a key in the API console. Keys start with sk-popnow- and use the same credits as the website.
2. Send the request. POST /jobs/createTask with model minimax/h3-lora/image-to-video and an input object that follows the parameter table. The response returns a task ID straight away.
3. Get the result. Poll GET /jobs/recordInfo with the task ID, or pass a callBackUrl and we post the result to it. Download the output links when the task succeeds.

# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
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: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "minimax/h3-lora/image-to-video",
  "input": {
    "prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "resolution": "480p",
    "duration_seconds": 5
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

Replace the prompt and any links with your own. The API tab has the response, polling and callback reference.

MiniMax H3 LoRA API questions

All MiniMax models

MiniMax H3 Singularity LoRA uses the same LoRAs on a fine-tune that keeps fast action and distant faces sharper, but renders more slowly and has no text to video.

• MiniMax H3 APIExpressive clips with audio, up to 2KFrom 28 credits for a 5-second clip
• MiniMax Speech 2.8 HD APIHigh-fidelity speech in 400+ voices with emotion controlFrom 18 credits per 1,000 characters
• MiniMax Music 3.0 APIFinished stereo songs, with vocals or instrumentalFrom 27 credits per run
• MiniMax H3 Singularity LoRA APICommunity-tuned H3 video that loads your own LoRAsFrom 45 credits for a 5-second clip
• MiniMax H3 Max APIFast clips with ambience, effects and musicFrom 38 credits for a 5-second clip
• MiniMax H3 LoRA APIMiniMax H3 video with sound and up to three of your LoRAsFrom 38 credits for a 5-second clip
• MiniMax H3 Image LoRA APIH3 stills and edits with up to three of your LoRAsFrom 7 credits per image
• MiniMax Speech 2.8 Turbo APIFast speech in 400+ voices with emotion controlFrom 11 credits per 1,000 characters

Other video APIs

• LTX-2.3 LoRA APILTX-2.3 clips with stereo sound and your own LoRAsFrom 18 credits for a 5-second clip
• LTX-2 19B LoRA APILTX-2 clips with sound and your own LoRA stylesFrom 14 credits for a 5-second clip
• Wan 2.2 LoRA APIWan 2.2 video with your LoRAs on either expert passFrom 18 credits for a 5-second clip
• Wan 2.2 5B LoRA APILight 720p Wan 2.2 clips that load your own LoRAsFrom 18 credits per run
• Wan 2.1 LoRA APIWan 2.1 video and edits with your own LoRAs, camera moves includedFrom 36 credits per run

More about MiniMax H3 LoRA

Try it

MiniMax H3 LoRA AI Video Generator onlineCreate videos with MiniMax H3 LoRA in PopNow

Docs

MiniMax H3 LoRA model ID and input schema in the API docsPopNow API quickstart: your first request in five minutesImage to video guide for the PopNow APIWebhooks: get MiniMax H3 LoRA results without polling