Kling 2.6 Video API Reference | Nano Banana Pro API

Kling26

Kling 2.6 video generation with optional audio

Endpoint: POST /api/v1/videos/generate
model: kling26
Output: Video
Credits: from 60

Submit a task

POST/api/v1/videos/generate

Parameters

modelstringRequired
Must be "kling26"
typestringOptionalDefault text-to-video
"text-to-video" or "image-to-video" (default: text-to-video)
text-to-videoimage-to-video
promptstringRequired
Text description of the video
image_urlsstring[]Optional
Input image URLs for image-to-video
input_imagestringOptional
Deprecated. Alias for image_urls[0]
durationstringOptional
"5" or "10"
510
soundbooleanOptionalDefault false
Generate with audio (default: false)
truefalse
aspect_ratiostringOptional
Output aspect ratio

Request

curl -X POST https://www.bananapro.site/api/v1/videos/generate \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kling26",
    "prompt": "A fireworks display over a city skyline",
    "duration": "10",
    "sound": true
  }'

Response200

JSON

{
  "success": true,
  "data": {
    "task_id": "task_kling123",
    "credits_used": 240,
    "remaining_credits": 260,
    "model": "kling26"
  }
}

The credits_used values shown in these examples are illustrative. Actual usage is calculated when you submit and returned by the API.

Query the task

GET/api/v1/videos/{task_id}

status

pending: Accepted and waiting to start. Keep polling.
processing: Running. Keep polling.
completed: Finished. Read video_url; output holds the full result.
failed: Ended without a result. error_message says why and credits_refunded shows what was returned.

Poll every 5 to 10 seconds and stop at completed or failed, or register a webhook to be notified instead. Failed tasks are refunded automatically.

Request

curl https://www.bananapro.site/api/v1/videos/task_abc123 \
  -H "Authorization: Bearer sk-your-api-key"

Response200

JSON

{
  "success": true,
  "data": {
    "task_id": "task_abc123",
    "model": "kling26",
    "status": "completed",
    "output": { "video_url": "https://..." },
    "video_url": "https://...",
    "error_message": null,
    "credits_used": 240,
    "credits_refunded": 0,
    "created_at": "2026-10-04T10:00:00.000Z",
    "updated_at": "2026-10-04T10:01:12.000Z",
    "completed_at": "2026-10-04T10:01:12.000Z"
  },
  "request_id": "req_abc123"
}

Wait for the result

TASK_ID=task_abc123
while true; do
  TASK=$(curl -s https://www.bananapro.site/api/v1/videos/$TASK_ID \
    -H "Authorization: Bearer sk-your-api-key")
  STATUS=$(echo "$TASK" | jq -r '.data.status')
  if [ "$STATUS" = "completed" ] || [ "$STATUS" = "failed" ]; then
    echo "$TASK" | jq
    break
  fi
  sleep 10
done

Pricing

Duration	No Sound	With Sound
5 sec	60	120
10 sec	120	240

Features

Text-to-video generation
Optional audio generation
Multiple durations
High quality output

curl -X POST https://www.bananapro.site/api/v1/videos/generate \ -H "Authorization: Bearer sk-your-api-key" \ -H "Content-Type: application/json" \ -d '{ "model": "kling26", "prompt": "A fireworks display over a city skyline", "duration": "10", "sound": true }'

{ "success": true, "data": { "task_id": "task_abc123", "model": "kling26", "status": "completed", "output": { "video_url": "https://..." }, "video_url": "https://...", "error_message": null, "credits_used": 240, "credits_refunded": 0, "created_at": "2026-10-04T10:00:00.000Z", "updated_at": "2026-10-04T10:01:12.000Z", "completed_at": "2026-10-04T10:01:12.000Z" }, "request_id": "req_abc123" }

TASK_ID=task_abc123 while true; do TASK=$(curl -s https://www.bananapro.site/api/v1/videos/$TASK_ID \ -H "Authorization: Bearer sk-your-api-key") STATUS=$(echo "$TASK" | jq -r '.data.status') if [ "$STATUS" = "completed" ] || [ "$STATUS" = "failed" ]; then echo "$TASK" | jq break fi sleep 10 done

Duration

No Sound

With Sound

5 sec

120

10 sec

120

240