PixVerse Extend Fast

Name: PixVerse Extend Fast
Price: 0.3 USD
Availability: InStock
Author: PixVerse

pixverse/extend/fast

Extend Fast is PixVerse's video-to-video AI model. Transform, enhance, and edit video content using text prompts - from style changes to object manipulation and scene modification.

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Base price: $0.30USD / run
Execution: async
Model type: video
Input fields: 7

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Playground

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Input

Prompt(string)

Prompt describing how to extend the video

Video Url(string)

URL of the input video to extend

Resolution(string)

The resolution of the generated video. Fast mode doesn't support 1080p Allowed values: 360p, 540p, 720p.

Seed(integer)

Random seed for generation

Generate Audio Switch(boolean)

Enable audio generation (BGM, SFX, dialogue). Supported in v5.6+ models.

Model(string)

The model version to use for generation Allowed values: v3.5, v4, v4.5, v5, v5.5, v5.6, v6.

Style(string)

The style of the extended video Allowed values: anime, 3d_animation, clay, comic, cyberpunk.

OutputReady

Your output will appear here

Complete the inputs, then click Run.

Model card

Specifications

Pricing

Base price: $0.30 / run

Context & modalities

Input: Schema-defined
Output: video

Capabilities

Chat: Not supported
Vision: Not supported
Reasoning: Not supported
Structured output: Not supported
Function calling: Not supported
Audio input: Not supported

Access

Provider: PixVerse
Model ID: pixverse/extend/fast
Execution: async
Base URL: https://api.sandbase.ai
API: Unified Run API
Endpoint: /v1/run

API README

PixVerse Fast

PixVerse Fast is the PixVerse route for fast, turning the documented source inputs into a production-ready result while keeping the operation distinct from neighboring endpoints. Extend Fast is PixVerse's video-to-video AI model. Transform, enhance, and edit video content using text prompts - from style changes to object manipulation and scene modification. The workflow is designed for creators who need the model’s specific transformation to remain visible in the request, so the source, intended change, and finished artifact can be reviewed as one coherent creative decision.

In practical use, this route exposes seed, model, style, video, prompt, resolution, generate_audio_switch to shape the exact deliverable. Those controls let a team preserve the important source constraints, state subject behavior or material treatment precisely, choose supported timing or output characteristics, and reproduce successful settings across alternate takes. The result fits an iterative pipeline: establish the core brief, compare controlled variations, then pass the selected asset into editorial, design, localization, visualization, or publishing work.

Highlights

Route-specific creation. Use this exact route for fast with its documented input contract. This capability belongs to the exact pixverse/extend/fast workflow.
Directed motion. Translate the request into subject movement and camera behavior while maintaining temporal continuity.
Format control. Choose the documented duration and resolution options for the target placement.
Repeatable variation. Use seed and route controls to explore alternates without changing the core shot brief.

Pricing

Configuration	Price
360p or 540p	`$0.300000`
720p	`$0.400000`
1080p	`$0.800000`

When to Use

Scenario	Why it fits
Exact workflow fit	Choose this route when the required deliverable is fast, rather than a related route with different source media.
Directed creative iteration	Use it when subject, motion, material, speech, framing, or finish should be expressed explicitly and compared across controlled variants.
Existing-asset continuity	Use it when supplied images, video, audio, references, or styles must remain the anchor for the generated result.
Repeatable production	Use it when successful inputs need to be saved and rerun across a campaign, asset set, localization pass, or batch.
Pipeline handoff	Use it when the returned artifact will move into editorial, compositing, visualization, review, storage, or publishing.

Prompt Guide

Start with the source or subject, then describe the intended transformation, movement or behavior, camera and composition, and the desired finish. Keep media URLs reachable, use only fields documented for this exact route, and change one major control at a time when comparing results. For source-led tasks, describe what should change as well as what must remain recognizable.

{
  "prompt": "A kid is talking into camera",
  "resolution": "720p"
}

Technical Specs

Property	Value
Model ID	`pixverse/extend/fast`
Execution mode	`async`
Required inputs	`prompt`
`seed`	integer
`model`	string; options: v3.5, v4, v4.5, v5, v5.5, v5.6, v6; default: v4.5
`style`	string; options: anime, 3d_animation, clay, comic, cyberpunk
`video`	string
`prompt`	string
`resolution`	string; options: 360p, 540p, 720p; default: 720p
`generate_audio_switch`	boolean; default: false

Related Models

pixverse/c1/image-to-video
pixverse/c1/reference-to-video
pixverse/c1/text-to-video
pixverse/c1/transition

Start building

Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

Production API

Unified Run API endpoint

https://api.sandbase.ai/v1/run

Model ID

pixverse/extend/fast

# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/run" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "v4.5",
  "video": "https://static.sandbase.ai/examples/pixverse/extend/fast/output_url_0.mp4",
  "prompt": "A kid is talking into camera",
  "resolution": "720p",
  "generate_audio_switch": false
}
SANDBASE_JSON
)
run_id=$(printf '%s' "$result" | jq -r .id)
for attempt in $(seq 1 120); do
  status=$(printf '%s' "$result" | jq -r .status)
  case "$status" in completed|failed|timeout) break ;; esac
  sleep 2
  result=$(curl --fail-with-body --silent \
    -H "Authorization: Bearer $SANDBASE_API_KEY" \
    "https://api.sandbase.ai/v1/run/$run_id")
done
status=$(printf '%s' "$result" | jq -r .status)
[ "$status" = completed ] || { echo "Generation ended: $status" >&2; exit 1; }
printf '%s\n' "$result"

Choose your model

Compare models

All image & video models

Model	Type	Default price	Released
PixVerse Extend FastThis model `PixVerse`	Video	$0.30 / run	Jun 30, 2025
PixVerse C1 Image to Video `PixVerse`	Video	$0.25 / run	Apr 9, 2026
PixVerse V6 Image to Video `PixVerse`	Video	$0.23 / run	Mar 29, 2026

Questions

FAQ

How do I call PixVerse Extend Fast through SandBase?

Create a SandBase API key, then send requests with the model ID "pixverse/extend/fast" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

Do I need a separate PixVerse account?

No. One SandBase API key and balance gives you access to PixVerse Extend Fast and the other models in the catalog; you do not need to sign up with PixVerse separately.