Veo 3.1

Google's high-fidelity video generation with Fast and Quality modes

Veo 3.1

Google's advanced video generation with multiple quality tiers.

Model ID

veo-3-1

Price

$0.20-1.50/video

Speed

~2 minutes

Type

Video

Quality Modes

Mode	Price	Description
`fast`	$0.20	Quick, cost-effective
`quality`	$1.50	High-fidelity output

Generation Types

Type	Images Required	Description
`TEXT_2_VIDEO`	0	Text-only video generation
`FIRST_AND_LAST_FRAMES_2_VIDEO`	1-2	Transition between frames
`REFERENCE_2_VIDEO`	1-3	Style reference (fast mode, 16:9 only)

Parameters

For common parameters (request_type, callback_url), see Request Format.

Parameter	Type	Required	Default	Description
`mode`	string	Yes	-	`fast` or `quality`
`prompt`	string	Yes	-	Video description (max 10,000 characters)
`generationType`	string	Yes	-	See Generation Types above
`image_urls`	string[]	No	-	Reference images (max 10MB, JPG/PNG)
`aspect_ratio`	string	No	`16:9`	`16:9`, `9:16`, or `auto`
`enableTranslation`	boolean	No	`true`	Auto-translate prompts
`watermark`	string	No	-	Custom watermark
`seed`	integer	No	-	For reproducibility

Examples

Text to Video (Fast)

curl -X POST https://api.apixo.ai/api/v1/generateTask/veo-3-1 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "input": {
      "mode": "fast",
      "prompt": "A golden retriever running through a field of flowers",
      "generationType": "TEXT_2_VIDEO",
      "aspect_ratio": "16:9"
    }
  }'

Frame Transition

curl -X POST https://api.apixo.ai/api/v1/generateTask/veo-3-1 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "input": {
      "mode": "quality",
      "prompt": "Smooth morphing transition between the two landscapes",
      "generationType": "FIRST_AND_LAST_FRAMES_2_VIDEO",
      "image_urls": [
        "https://example.com/start-frame.jpg",
        "https://example.com/end-frame.jpg"
      ],
      "aspect_ratio": "16:9"
    }
  }'

Tips

Polling: Wait 120 seconds, then poll every 10 seconds
Timeout: Set max wait to 10 minutes
REFERENCE_2_VIDEO only works with fast mode and 16:9 aspect ratio
Use quality mode for final output, fast for iterations

Veo 3.1

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