MiniMax H3 HighSpeed API

About MiniMax H3 HighSpeed

MiniMax H3 HighSpeed creates 4–15-second videos with sound at 768p. Start from text, an image or image, video and audio references. Image-to-video also accepts an optional closing frame.

Call it with the model name minimax/h3-highspeed/text-to-video on POST /jobs/createTask, from $0.30.

Introduction

MiniMax H3 HighSpeed Text to video turns a written prompt into a 4 to 15 second clip at 768p, with dialogue, effects and music generated in the same pass as the picture. A clip took about 26 seconds for a 4-second clip in our runs.

Choose a mode by starting material

Key features

Sound and dialogue in one pass

Every MiniMax H3 HighSpeed clip comes back with sound. Lines written in double quotes are spoken, and music or ambience follows the words you use for them, so a short scene needs no separate audio step.

Fast 768p

HighSpeed renders 768p only and is built for a short wait at that size; use H3 Lite when you want a 480p draft for less.

Request parameters

Pricing

Prices are in USD. The API uses a separate USD balance. Website credits cannot be used or transferred to it, and API funds cannot be transferred to website credits. When a task is accepted, we reserve the maximum quoted amount from your API balance. On completion, we charge for actual usage, never more than the hold, and release the remainder. If the task fails, the hold is released.

Send the same request body to POST /jobs/quote to see the estimated and maximum USD charge before running. A quote does not run the task or charge your balance.

Use cases

Storyboards and pitch clips

Turn a written shot list into moving previews for a pitch or a script read. Each prompt on MiniMax H3 HighSpeed returns a finished clip with sound, so the room hears the scene as well as seeing it, and a weak idea can be dropped before anything expensive is made.

Prompt drafts at volume

Writers and app builders can try many versions of a scene on MiniMax H3 HighSpeed and keep the one that works, paying per second of output only. Changing one detail at a time, such as the camera, the outfit or the line of dialogue, shows quickly which version of the scene is worth a longer render.

Vertical clips with a line of dialogue

A 9:16 scene of 5 to 8 seconds with one quoted line and ambience fits social formats directly from MiniMax H3 HighSpeed, with no editing pass for sound. Creators who post daily can keep a recurring setting and change only the action and the line in each new prompt.

Prompt guide & pro tips

Write the scene in order

On MiniMax H3 HighSpeed, describe who is there, what they do first and next, where the camera is, and finish with an Audio: line for sound. A clear order gives cleaner motion than a list of adjectives, and naming the light, such as golden hour or neon, sets the mood quickly.

Keep dialogue short

On MiniMax H3 HighSpeed, one or two quoted lines suit a 5 to 8 second clip; say who speaks each line so the right person moves their lips. Longer speeches get rushed or cut, so split them across several clips.

Match length to the action

Short actions read best in 4 to 6 seconds; longer clips need a second beat in the prompt so the scene does not stall. A 4-second request returned 3.75 seconds in our test.

API quick start

Call the MiniMax H3 HighSpeed 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-. API calls use your separate USD balance.
2. Send the request. POST /jobs/createTask with model minimax/h3-highspeed/text-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-highspeed/text-to-video",
  "input": {
    "prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
    "aspect_ratio": "16:9",
    "resolution": "768p",
    "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 HighSpeed price on other platforms

Options	PopNow	Replicate
MiniMax H3 HighSpeed	$0.0600/ s	$0.0300/ s

Each platform's public API list price for the same model and settings, checked Nov 5, 2026.

MiniMax H3 HighSpeed API questions

All MiniMax models

MiniMax H3 Lite offers the same three input modes with a choice of 480p or 768p. H3 HighSpeed outputs 768p only.

• MiniMax H3 APIExpressive clips with audio, up to 30 seconds or 2KFrom $0.125 for a 5-second clip
• MiniMax Speech 2.8 HD APIHigh-fidelity speech in 400+ voices with emotion controlFrom $0.12 per 1,000 characters
• MiniMax Music 3.0 APIFinished stereo songs, with vocals or instrumentalFrom $0.18 per run
• MiniMax H3 HighSpeed API768p video with sound from text, images or referencesFrom $0.30 for a 5-second clip
• MiniMax H3 Lite APIVideo with sound at 480p or 768p from text, images or referencesFrom $0.125 for a 5-second clip
• MiniMax H3 X API2–15-second videos with sound, up to 1080pFrom $0.11 for a 5-second clip
• MiniMax H3 X Turbo APIText, images or audio references into video with soundFrom $0.075 for a 5-second clip
• MiniMax H3 Singularity LoRA APICommunity-tuned H3 video that loads your own LoRAsFrom $0.30 for a 5-second clip
• MiniMax H3 Max APIFast clips with ambience, effects and musicFrom $0.28 for a 5-second clip
• MiniMax H3 LoRA APIMiniMax H3 video with sound and up to three of your LoRAsFrom $0.25 for a 5-second clip
• MiniMax H3 Image LoRA APIH3 stills and edits with up to three of your LoRAsFrom $0.042 per image
• MiniMax H3 Edit APIChange the light, weather or style of a clip; people and motion stayFrom $0.15 for a 5-second clip
• MiniMax Speech 2.8 Turbo APIFast speech in 400+ voices with emotion controlFrom $0.072 per 1,000 characters
• MiniMax H3 360 Orbit APIA full 360° camera orbit around the subject of one photoFrom $0.25 for a 5-second clip

Other video APIs

• Kling 4.0 Flash APIFast 720p Kling clips with sound, 3 to 20 secondsFrom $0.564 for a 5-second clip
• Seedance 2.5 APIByteDance's newest: 30-second clips with native audioFrom $0.369 for a 5-second clip
• Kling 4.0 APIUp to 30-second 1080p clips with keyframes, edits and extensions; may queue when busyFrom $0.564 for a 5-second clip
• Vidu Q4 Preview APIUp to 4K clips with sound and spoken dialogueFrom $0.225 for a 5-second clip

More about MiniMax H3 HighSpeed

Try it

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

Endpoints

MiniMax H3 HighSpeed · Image to VideoMiniMax H3 HighSpeed · Reference to Video

Docs

MiniMax H3 HighSpeed model ID and input schema in the API docsPopNow API quickstart: send your first requestImage to video guide for the PopNow APIWebhooks: get MiniMax H3 HighSpeed results without polling