Pixverse V4.5 T2V Fast | Powerful Text-to-Video API

PixVerse V4.5 Text-to-Video Fast

PixVerse V4.5 Text-to-Video Fast is a versatile text-to-video generation model optimized for speed. Generate high-quality videos from text descriptions with multiple resolution options — from quick 360p previews to crisp 720p HD output.

Why It Stands Out

Fast processing: Optimized for quick video generation.
Multiple resolutions: Choose from 360p, 540p, or 720p based on your needs.
Prompt Enhancer: Built-in AI-powered prompt optimization for better results.
Flexible aspect ratios: Support for various aspect ratio presets.
Negative prompt support: Exclude unwanted elements for cleaner outputs.
Reproducibility: Use the seed parameter to recreate exact results.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the video you want to generate.
aspect_ratio	Yes	Output aspect ratio: 16:9, 9:16, 1:1, etc.
resolution	Yes	Output resolution: 360p, 540p, 720p.
duration	No	Video length: 5 seconds (default: 5).
negative_prompt	No	Elements to avoid in the output.
seed	No	Set for reproducibility; leave empty for random.

Supported Resolutions

Resolution	Best For
360p	Quick previews, drafts, low-bandwidth use
540p	Social media, balanced quality and speed
720p	HD output, final delivery, professional use

How to Use

Write a prompt describing the scene, action, and style you want. Use the Prompt Enhancer for AI-assisted optimization.
Select aspect ratio — choose the format that fits your platform.
Select resolution — choose 360p for drafts, 720p for final output.
Set duration — 5 seconds.
Add a negative prompt (optional) — specify elements to exclude.
Click Run and wait for your video to generate.
Preview and download the result.

Best Use Cases

Social Media Content — Create platform-optimized videos for TikTok, Reels, and Shorts.
Rapid Prototyping — Use 360p for quick concept testing.
Marketing & Advertising — Produce promotional videos and ad creatives.
Action & Sports — Generate dynamic slow-motion and action sequences.
Creative Projects — Bring imaginative concepts to life.

Pricing

Resolution	5 seconds
360p	$0.50
540p	$0.50
720p	$0.70

Pro Tips for Best Quality

Be detailed in your prompt — describe subject, action, environment, lighting, and style.
Use 360p or 540p for quick iterations, then generate final version at 720p.
Include motion keywords like "slow motion," "dynamic," or "cinematic."
Use negative prompts to reduce artifacts like blur or distortion.
Match aspect ratio to your target platform before generating.

Notes

Processing time is optimized for speed — expect quick turnaround.
Please ensure your prompts comply with content guidelines.

Pixverse v4.5 T2v Fast API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/pixverse/pixverse-v4.5-t2v-fast with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Pixverse v4.5 T2v Fast below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/pixverse/pixverse-v4.5-t2v-fast" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "aspect_ratio": "16:9",
    "resolution": "540p",
    "duration": 5,
    "negative_prompt": "blurry, low quality, distorted",
    "seed": 0
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("pixverse/pixverse-v4.5-t2v-fast", {
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "aspect_ratio": "16:9",
        "resolution": "540p",
        "duration": 5,
        "negative_prompt": "blurry, low quality, distorted",
        "seed": 0
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "pixverse/pixverse-v4.5-t2v-fast",
    {
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "aspect_ratio": "16:9",
    "resolution": "540p",
    "duration": 5,
    "negative_prompt": "blurry, low quality, distorted",
    "seed": 0
}
)

print(output["outputs"][0])  # → URL of the generated output

Pixverse v4.5 T2v Fast API — Frequently asked questions

What is the Pixverse v4.5 T2v Fast API?

Pixverse v4.5 T2v Fast is a Pixverse model for video generation, exposed as a REST API on WaveSpeedAI. Pixverse v4.5 Fast turns text prompts into high-quality videos with multiple resolutions, aspect ratios, and motion modes. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Pixverse v4.5 T2v Fast API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/pixverse/pixverse-pixverse-v4.5-t2v-fast.

How much does Pixverse v4.5 T2v Fast cost per run?

Pixverse v4.5 T2v Fast starts at $0.50 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Pixverse v4.5 T2v Fast accept?

Key inputs: `prompt`, `aspect_ratio`, `resolution`, `duration`, `seed`, `negative_prompt`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/pixverse/pixverse-pixverse-v4.5-t2v-fast.

How do I get started with the Pixverse v4.5 T2v Fast API?

Sign up for a free WaveSpeedAI account to claim starter credits, copy your API key from /accesskey, then call the endpoint shown in the API tab of the playground. The playground also auto-generates a code sample in Python, JavaScript, or cURL for the parameters you've set.

Can I use Pixverse v4.5 T2v Fast outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (Pixverse). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

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