Seedance 2.5 Lite

1. 1

   Create the prediction

   Send the input in a POST. The API answers 201 at once, without waiting for the result: the prediction is in the starting state, with an estimate in eta and the address to poll in urls.get.

   Request

   curl -s -X POST https://api.picassoia.com/v1/models/picassoia/seedance-2.5-lite/predictions \
     -H "Authorization: Bearer $PICASSOIA_API_KEY" \
     -H "Content-Type: application/json" \
     -d '{"input":{"prompt":"a paper boat sailing down a rainy street"}}'

   Response · 201 Createdstarting

   {
     "id": "api_3f9c2b7e8d1a4c6f9e0b1a2c3d4e5f60",
     "model": "picassoia/seedance-2.5-lite",
     "input": {
       "prompt": "a paper boat sailing down a rainy street",
       "resolution": "480p",
       "duration": 5,
       "aspect_ratio": "16:9",
       "save_audio": true,
       "enhance_prompt": true
     },
     "output": null,
     "error": null,
     "status": "starting",
     "created_at": "2026-10-01T09:30:00.000Z",
     "started_at": null,
     "completed_at": null,
     "metrics": {
       "predict_time": null
     },
     "urls": {
       "get": "https://api.picassoia.com/v1/predictions/api_3f9c2b7e8d1a4c6f9e0b1a2c3d4e5f60",
       "cancel": "https://api.picassoia.com/v1/predictions/api_3f9c2b7e8d1a4c6f9e0b1a2c3d4e5f60/cancel"
     },
     "eta": {
       "seconds": 60,
       "next_poll_in_seconds": 30
     }
   }

2. 2

   Poll it until it finishes

   Ask urls.get again after eta.next_poll_in_seconds: at half the estimate, when the estimate is reached, then every 2 seconds. Polling faster gets you nothing sooner.

   Statuses:startingprocessingsucceeded·failed·canceled

   Request

   # Repeat after eta.next_poll_in_seconds until status is
   # succeeded, failed or canceled.
   curl -s https://api.picassoia.com/v1/predictions/api_3f9c2b7e8d1a4c6f9e0b1a2c3d4e5f60 \
     -H "Authorization: Bearer $PICASSOIA_API_KEY"

   Response · 200 OK · in progressprocessing

   {
     "id": "api_3f9c2b7e8d1a4c6f9e0b1a2c3d4e5f60",
     "status": "processing",
     "output": null,
     "eta": {
       "seconds": 30,
       "next_poll_in_seconds": 30
     }
   }

   Only the fields that change are shown; the rest are as in step 1.

3. 3

   Read the result

   When status is succeeded, output is the URL of the MP4. Download the files you want to keep.

   If status is failed, error says why; canceled means it was canceled before it finished. These three statuses are final: the prediction never changes again.

   Request

   # The last poll holds the result: "output" when "status" is succeeded,
   # "error" when it is failed. With jq, just those three fields:
   curl -s https://api.picassoia.com/v1/predictions/api_3f9c2b7e8d1a4c6f9e0b1a2c3d4e5f60 \
     -H "Authorization: Bearer $PICASSOIA_API_KEY" | jq '.status, .output, .error'

   Response · 200 OK · finishedsucceeded

   {
     "id": "api_3f9c2b7e8d1a4c6f9e0b1a2c3d4e5f60",
     "status": "succeeded",
     "output": "https://…/output.mp4",
     "error": null,
     "completed_at": "2026-10-01T09:30:54.000Z",
     "metrics": {
       "predict_time": 52.8
     },
     "eta": null
   }

   Only the fields that change are shown; the rest are as in step 1.

The ids, times and URLs in these answers are examples: yours come in each answer.