A faster Veo route for 4, 6, or 8 second text-to-video with 720p-4K output, seeds, negative prompts, and generated audio.
Provider: Google
Category: video generation
Endpoint: /v1/tasks
Status: Available
Cost: See live page pricing
Google Veo 3.1 Fast: high-speed text-to-video, native audio, up to 4K, supports 4/6/8-second clips.
Pricing
Standard Usage
Choose 4-8 seconds in 2-second steps
Describe what should not appear in the result
Generate synchronized audio for the video
Ready for generation
Configure your parameters and click "Run" to see the output here.
Public model preview
Use this model preview to inspect the output format, subject motion, camera movement, and scene continuity.
A faster Veo route for 4, 6, or 8 second text-to-video with 720p-4K output, seeds, negative prompts, and generated audio.
Prompt shown with this public preview
A cinematic night market seen from a slow moving camera, warm lanterns, natural crowd motion, synchronized ambience
Choose by input method, output specifications, control surface, and budget.
Long-form video
Generate up to 30 seconds with seven aspect ratios and synchronized audio.
A faster Veo route for 4, 6, or 8 second text-to-video with 720p-4K output, seeds, negative prompts, and generated audio.
The route accepts a prompt without requiring an input image. Use a separate image-to-video route when the opening composition must be fixed. veo-3.1-fast/text-to-video
These specifications reflect the current HiAPI Veo 3.1 Fast Text to Video request contract.
Validate a short shot first, then increase quality or duration after motion and subject consistency are stable.
This is the minimum request for an asynchronous text-to-video task. Use the API docs for task retrieval, callbacks, errors, and the complete parameter contract.
curl -X POST "https://api.hiapi.ai/v1/tasks" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "veo-3.1-fast/text-to-video",
"input": {
"prompt": "A cinematic night market seen from a slow moving camera, warm lanterns, natural crowd motion, synchronized ambience",
"duration": 8,
"resolution": "720p",
"aspect_ratio": "16:9",
"generate_audio": true
}
}'It is a pure text-to-video route and does not require an opening image.
4-8 seconds, 720p, 1080p, 4k, and 16:9, 9:16.
Generated audio enabled by default
Billing follows output duration and the live tier. Resolution, mode, or audio differences are reflected by the page price and task record.
POST an asynchronous task to /v1/tasks with model set to veo-3.1-fast/text-to-video and place parameters inside input.
Lead with subject and setting, then describe action, camera direction, and speed in time order. State no cuts for a continuous take.
Draft
8s · 720p
Final
8s · 4k
Validate subject motion and camera continuity with 8s · 720p, then move to 8s · 4k.
Check motion stability and subject consistency online, then create an asynchronous task with the same model ID: veo-3.1-fast/text-to-video.