Wan 2.6 Flash API

Introduction

Send up to five references, up to three of them short clips and the rest still images, or stills alone; location, action, camera and light all come from the prompt. The result runs any whole number of seconds from 2 to 10, at 720p or 1080p, in one of five aspect ratios, as one continuous take or a multi-shot edit. Clips are silent by default; switch generate_audio on when the scene needs its own soundtrack.

Choose a Wan 2.6 Flash mode by starting material

Key features

Cast from stills, clips, or both

reference_image_urls takes up to five stills and reference_video_urls up to three short clips, five references in total.

The prompt names the cast

Wan identifies each reference only through the names character1, character2 and so on, in order: clips first, then stills. Name each one before describing what they do, for example character1 dancing with character2, and the model knows who is who. Everything else — the set, the action, the camera and the light — is written, so a person photographed once can be placed on a rooftop at night or a rain-soaked quay without a second shoot.

Sound as a switch, shape as a parameter

generate_audio is off by default and returns picture only; on, the clip comes back with generated voices, effects and ambience at twice the per-second rate. aspect_ratio is chosen per request: 16:9, 9:16, 1:1, 4:3 or 3:4 at either resolution. 720p returns 1280×720, 720×1280, 960×960, 1088×832 or 832×1088; 1080p returns 1920×1080, 1080×1920, 1440×1440, 1632×1248 or 1248×1632. Nothing is inherited from the references, so a vertical delivery does not need vertical sources.

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 17 credits for a 5-second clip ($0.17).

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

Use cases

Put two people in one scene

A portrait of each person, then a prompt for where they are and what passes between them.

Move a subject into a new location

A short clip or a still of the person, then the new set, the light and the camera move. The look comes from the reference while the location is written, so one shoot supplies footage for places that were never available on the day.

Prompt guide & pro tips

Name every reference before the action

Re-describing what the references already show spends that budget and can compete with them. Use negative_prompt for what keeps turning up and should not: extra people, captions, or a prop that follows a subject into the new scene.

Pick references the model can read

Stills and clips where the subject is large in frame and well lit transfer best; a subject that stays small or backlit tends to come back only approximately. Stills carry colour and look well, while shape and motion come through more faithfully from a clip. Send images as JPEG, PNG without transparency, BMP or WEBP, 240 to 8,000 pixels on each side and up to 20 MB, and clips as MP4 or MOV.

Budget the seconds before you submit

Billable seconds are the output duration plus the reference clips, each rounded up to whole seconds and at least one second per clip, with the clips counted up to five seconds in total; still images add nothing. The rate follows the resolution and doubles with generate_audio on.

Adapt the included example

Start from the rooftop example: two stills in reference_image_urls, aspect_ratio 16:9, duration_seconds 5, resolution 720p and generate_audio on. Replace the cast and the staging while keeping that input contract intact.

Check the result before iterating

Play the whole clip rather than the first second: likeness tends to drift towards the end of the longer durations. multi mostly pays off from about 6 seconds upward, and choosing it also switches enable_prompt_expansion on for that request. Hold the seed and swap one reference at a time when comparing; it keeps the random draw constant without promising a frame-identical rerun.

API quick start

Call the Wan 2.6 Flash 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 alibaba/wan-2.6-flash/reference-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": "alibaba/wan-2.6-flash/reference-to-video",
  "input": {
    "prompt": "A slow aerial shot drifting over a misty pine forest at sunrise",
    "reference_video_urls": [
      "https://media.popnow.ai/effects/flower-bloom-1abd6efb.mp4"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration_seconds": 5,
    "shot_type": "single"
  }
}'

# 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.

Wan 2.6 Flash API questions

All Wan models

Wan 2.6 renders the same requests with finer texture; Flash trades a little detail for speed and price.

• Wan 3.0 APIUp to 30-second clips with synced audioFrom 34 credits for a 5-second clip
• Wan 3.0 Prime APIQuicker Wan 3.0 renders, up to 30 seconds with audioFrom 46 credits for a 5-second clip
• Wan 3.0 Pro Prime APIQuicker Wan 3.0 Pro with 2K and 4K outputFrom 176 credits for a 5-second clip
• Wan 3.0 Pro APIWan 3.0 at 1080p, 2K or 4K, up to 30 secondsFrom 108 credits for a 5-second clip
• Wan 2.7 Pro APILarge 4K canvases and nine-image compositesFrom 12 credits per image
• Wan 2.7 APIThinks through the composition, then draws up to four imagesFrom 5 credits per image
• Wan 2.6 Flash APIQuick multi-shot clips from a single imageFrom 17 credits for a 5-second clip
• Wan 2.6 APIMulti-shot sequences with sound at up to 1080pFrom 49 credits for a 5-second clip
• Wan 2.5 API1080p clips with sound that can follow your own audioFrom 34 credits for a 5-second clip
• Wan 2.2 Animate APIDrive a character photo with a reference videoFrom 7.95 credits per second
• 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 APISimple five-second clips at 480p or 720pFrom 36 credits per run
• Wan 2.2 5B LoRA APILight 720p Wan 2.2 clips that load your own LoRAsFrom 18 credits per run
• Wan 2.2 Image LoRA APIWan 2.2 stills with up to nine LoRAs across three slotsFrom 5 credits per image
• Wan 2.1 LoRA APIWan 2.1 video and edits with your own LoRAs, camera moves includedFrom 36 credits per run
• Wan 2.1 Image LoRA APIPhotoreal Wan 2.1 stills and restyles with your LoRAsFrom 5 credits per image

Other video APIs

• MiniMax H3 APIExpressive clips with audio, up to 2KFrom 28 credits for a 5-second clip
• Seedance 2.5 APIByteDance's newest: 30-second clips with native audioFrom 56 credits for a 5-second clip
• Kling 3.0 API4K clips, multi-shot cuts and motion controlFrom 51 credits for a 5-second clip
• Vidu Q4 Preview APIUp to 4K clips with sound and spoken dialogueFrom 34 credits for a 5-second clip
• Kling O3 APIKling’s unified model: create, animate, reference and edit up to 4KFrom 51 credits for a 5-second clip
• MiniMax H3 Max APIFast clips with ambience, effects and musicFrom 38 credits for a 5-second clip

More about Wan 2.6 Flash

Try it

Wan 2.6 Flash Image to Video AI onlineCreate videos with Wan 2.6 Flash in PopNow

Docs

Wan 2.6 Flash 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 Wan 2.6 Flash results without polling