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Model infoModelsSnapshot: 15 Oct 2026

Vidu (ShengShu) / Vidu Q4

Vidu Q4 Preview

Preview video model with 3–16-second generation, up to 4K output and up to fifteen reference images. Reference generation can also use MP3 voice samples.

Video generation
previewClosed weightsVideo generation
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
25 of 39 specification fields collected
Output resolution540p, 720p, 1080p, 2K, 4KSee specification notes below
Clip duration3–16 seconds; default 5See specification notes below
Input billingSee ratesVidu API · international · image
Output billingSee ratesPublished units and conditions below

Specifications

Provider-documented facts. “Not collected” means we have not verified that field yet, not that the feature is unsupported.

Context / input limit
Not collected
Maximum input tokens
Not collected
Maximum output
Not collected
Input modalities
Text, Image, AudioSource for Input modalities (opens in a new tab)
Output modalities
Video, AudioSource for Output modalities (opens in a new tab)

Audio accompanies generated video. This does not establish a standalone TTS or sound-generation endpoint.

Reasoning
Not collected
Tool calling
Not collected
Structured output
Not collected
Streaming
Not collected
Batch processing
Not collected
Fine-tuning
Not collected
Knowledge cutoff
Not collected
Release date
2026-10-07Source for Release date (opens in a new tab)

API availability date from official update history, not a checkpoint training date.

Parameters
Not collected
Architecture
Not collected
Languages
Not collected
Context caching
Not collected
API aliases
viduq4-previewSource for API aliases (opens in a new tab)
Maximum prompt characters
20,000Source for Maximum prompt characters (opens in a new tab)

Limits are characters, not tokens. Route and regional contracts are recorded below.

Video duration
3–16 seconds; default 5Source for Video duration (opens in a new tab)
Output resolutions
540p, 720p, 1080p, 2K, 4KSource for Output resolutions (opens in a new tab)

Default 720p except Q3 Drama direct reference, which defaults to 1080p. Pricing rows alone do not establish additional supported output resolutions.

Frame rate
24 fpsSource for Frame rate (opens in a new tab)

Model-map specification; no bitrate or output codec guarantee is inferred.

Input image formats
PNG, JPEG, JPG, WEBPSource for Input image formats (opens in a new tab)
Reference images
Image route: exactly 1 start image. Reference route: 1–15 images.Source for Reference images (opens in a new tab)
Image input limits
Image route: up to 50 MB per image and 20 MB request body. Reference route has a 20 MB request body limit; exact image byte/pixel caps are not specified.Source for Image input limits (opens in a new tab)
Input media transport
Accessible image URLs or Base64 with a content-type prefix. Respect per-route decoded-image and total-body limits.Source for Input media transport (opens in a new tab)
Seed control
Integer seed; omitted or 0 selects a random value. Numeric range and repeatability guarantees are not published.Source for Seed control (opens in a new tab)
Asynchronous generation
SupportedSource for Asynchronous generation (opens in a new tab)
Request mode
Submit a native task and poll /ent/v2/tasks/{id}/creations, or provide a signed callback URL. JSON task envelopes are not evidence of LLM structured-output support.Source for Request mode (opens in a new tab)
Task callbacks
Processing, success and failure events. Terminal callback delivery is retried up to three times. HMAC-SHA256 signature uses the provider-documented canonical string, signed headers, date and nonce.Source for Task callbacks (opens in a new tab)
Pass-through payload limit
Optional pass-through string, up to 1,048,576 characters.Source for Pass-through payload limit (opens in a new tab)
Output link expiry
Creation, cover and watermarked output URLs expire after 24 hours. No provider-side deletion deadline is established by this link lifetime.Source for Output link expiry (opens in a new tab)
Request quotas
Default five concurrent tasks per organization, shared across API keys; excess tasks queue. Purchased plan and system load can change effective concurrency.Source for Request quotas (opens in a new tab)
Usage metering
Generated-video seconds, with prices dependent on route, resolution, account market and eligible off-peak mode. Not a text-token or per-question tariff.Source for Usage metering (opens in a new tab)
Published price
International standard credit value: USD 0.005. Mainland schedule: CNY 0.03125. Generation rates are attached to each priced task route.Source for Published price (opens in a new tab)

Regional credit values are separate provider prices, not a foreign-exchange conversion.

Off-peak generation
No off_peak field or discount is published in the reviewed Q4 Preview contract.Source for Off-peak generation (opens in a new tab)
Prompt expansion
is_rec defaults to true, replacing the supplied prompt with a recommended prompt.Source for Prompt expansion (opens in a new tab)

November 2025 update describes a 10-credit expansion surcharge. Current pricing separately charges 10 credits per five output prompts. Whether that separate prompt service tariff applies to this switch is unresolved; generation rates exclude expansion.

Voice references
Reference route: 0–3 MP3 samples, each 3–12 seconds and at most 50 MB; 20 MB total request body. Audio input is not part of the image route.Source for Voice references (opens in a new tab)
Reusable subjects
Subject-library invocation explicitly not supported yet, despite prompt prose mentioning subject-name syntax.Source for Reusable subjects (opens in a new tab)

Access & pricing

Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.

Vidu API · international · image

Provider source (opens in a new tab)
API model ID
viduq4-preview
Access
POST https://api.vidu.com/ent/v2/img2video; Token-authenticated native task API. Poll GET https://api.vidu.com/ent/v2/tasks/{id}/creations.
Regions
International service; inference residency unverified
task
imageSource for task (opens in a new tab)
Published request quota
Not collected

No per-key RPM/QPS limit established by concurrency guidance.

Concurrent requests
Default five running tasks per organization, not per API key; plan and load may varySource for Concurrent requests (opens in a new tab)
Maximum prompt characters
20,000Source for Maximum prompt characters (opens in a new tab)
Video duration
3–16 seconds, default 5Source for Video duration (opens in a new tab)
Output resolutions
540p, 720p, 1080p, 2K, 4KSource for Output resolutions (opens in a new tab)

Default 720p except Q3 Drama direct reference, which defaults to 1080p. Pricing rows alone do not establish additional supported output resolutions.

Output link expiry
Creation, cover and watermarked output URLs expire after 24 hours. No provider-side deletion deadline is established by this link lifetime.Source for Output link expiry (opens in a new tab)
Reference images
Exactly 1 start imageSource for Reference images (opens in a new tab)
Image input limits
At most 50 MB per image; 20 MB HTTP bodySource for Image input limits (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Video generation540p · standard1$0.045second of output video
Video generation720p · standard2$0.095second of output video
Video generation1080p · standard3$0.12second of output video
Video generation2K · standard4$0.19second of output video
Video generation4K · standard5$0.39second of output video

Rate conditions

  1. 9 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  2. 19 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  3. 24 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  4. 38 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  5. 78 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
Pricing source (opens in a new tab)

Data & enterprise terms

International privacy policy states personal data storage in Singapore and retention for legal/operational purposes. It does not establish inference residency, zero retention or a no-training guarantee. Creation links last 24 hours.

Read the service policy (opens in a new tab)

Vidu API · international · reference

Provider source (opens in a new tab)
API model ID
viduq4-preview
Access
POST https://api.vidu.com/ent/v2/reference2video; Token-authenticated native task API. Poll GET https://api.vidu.com/ent/v2/tasks/{id}/creations.
Regions
International service; inference residency unverified
task
referenceSource for task (opens in a new tab)
Published request quota
Not collected

No per-key RPM/QPS limit established by concurrency guidance.

Concurrent requests
Default five running tasks per organization, not per API key; plan and load may varySource for Concurrent requests (opens in a new tab)
Maximum prompt characters
20,000Source for Maximum prompt characters (opens in a new tab)
Video duration
3–16 seconds, default 5Source for Video duration (opens in a new tab)
Output resolutions
540p, 720p, 1080p, 2K, 4KSource for Output resolutions (opens in a new tab)

Default 720p except Q3 Drama direct reference, which defaults to 1080p. Pricing rows alone do not establish additional supported output resolutions.

Output link expiry
Creation, cover and watermarked output URLs expire after 24 hours. No provider-side deletion deadline is established by this link lifetime.Source for Output link expiry (opens in a new tab)
Reference images
1–15 imagesSource for Reference images (opens in a new tab)
Maximum request body
20 MB total HTTP bodySource for Maximum request body (opens in a new tab)
Aspect ratios
1:1, 9:16, 16:9, 3:4, 4:3Source for Aspect ratios (opens in a new tab)
Voice references
Up to three MP3 samples, 3–12 seconds each; maximum 50 MB each, subject to request/Base64 limits.Source for Voice references (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Video generation540p · standard1$0.045second of output video
Video generation720p · standard2$0.095second of output video
Video generation1080p · standard3$0.12second of output video
Video generation2K · standard4$0.19second of output video
Video generation4K · standard5$0.39second of output video

Rate conditions

  1. 9 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  2. 19 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  3. 24 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  4. 38 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  5. 78 credits per output second × USD 0.005 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.com/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
Pricing source (opens in a new tab)

Data & enterprise terms

International privacy policy states personal data storage in Singapore and retention for legal/operational purposes. It does not establish inference residency, zero retention or a no-training guarantee. Creation links last 24 hours.

Read the service policy (opens in a new tab)

Vidu API · mainland China · image

Provider source (opens in a new tab)
API model ID
viduq4-preview
Access
POST https://api.vidu.cn/ent/v2/img2video; Token-authenticated native task API. Poll GET https://api.vidu.cn/ent/v2/tasks/{id}/creations.
Regions
Mainland China service; inference residency unverified
task
imageSource for task (opens in a new tab)
Published request quota
Not collected

No per-key RPM/QPS limit established by concurrency guidance.

Concurrent requests
Default five running tasks per organization, not per API key; plan and load may varySource for Concurrent requests (opens in a new tab)
Maximum prompt characters
20,000Source for Maximum prompt characters (opens in a new tab)
Video duration
3–16 seconds, default 5Source for Video duration (opens in a new tab)
Output resolutions
540p, 720p, 1080p, 2K, 4KSource for Output resolutions (opens in a new tab)

Default 720p except Q3 Drama direct reference, which defaults to 1080p. Pricing rows alone do not establish additional supported output resolutions.

Output link expiry
Creation, cover and watermarked output URLs expire after 24 hours. No provider-side deletion deadline is established by this link lifetime.Source for Output link expiry (opens in a new tab)
Reference images
Exactly 1 start imageSource for Reference images (opens in a new tab)
Image input limits
At most 50 MB per image; 20 MB HTTP bodySource for Image input limits (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Video generation540p · standard1CN¥0.28125second of output video
Video generation720p · standard2CN¥0.59375second of output video
Video generation1080p · standard3CN¥0.75second of output video
Video generation2K · standard4CN¥1.1875second of output video
Video generation4K · standard5CN¥2.4375second of output video

Rate conditions

  1. 9 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  2. 19 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  3. 24 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  4. 38 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  5. 78 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/img2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
Pricing source (opens in a new tab)

Data & enterprise terms

Mainland account-specific input-retention and training-use terms remain unverified. Output links expire after 24 hours.

Vidu API · mainland China · reference

Provider source (opens in a new tab)
API model ID
viduq4-preview
Access
POST https://api.vidu.cn/ent/v2/reference2video; Token-authenticated native task API. Poll GET https://api.vidu.cn/ent/v2/tasks/{id}/creations.
Regions
Mainland China service; inference residency unverified
task
referenceSource for task (opens in a new tab)
Published request quota
Not collected

No per-key RPM/QPS limit established by concurrency guidance.

Concurrent requests
Default five running tasks per organization, not per API key; plan and load may varySource for Concurrent requests (opens in a new tab)
Maximum prompt characters
20,000Source for Maximum prompt characters (opens in a new tab)
Video duration
3–16 seconds, default 5Source for Video duration (opens in a new tab)
Output resolutions
540p, 720p, 1080p, 2K, 4KSource for Output resolutions (opens in a new tab)

Default 720p except Q3 Drama direct reference, which defaults to 1080p. Pricing rows alone do not establish additional supported output resolutions.

Output link expiry
Creation, cover and watermarked output URLs expire after 24 hours. No provider-side deletion deadline is established by this link lifetime.Source for Output link expiry (opens in a new tab)
Reference images
1–15 imagesSource for Reference images (opens in a new tab)
Maximum request body
20 MB total HTTP bodySource for Maximum request body (opens in a new tab)
Aspect ratios
1:1, 9:16, 16:9, 3:4, 4:3Source for Aspect ratios (opens in a new tab)
Voice references
Up to three MP3 samples, 3–12 seconds each; maximum 50 MB each, subject to request/Base64 limits.Source for Voice references (opens in a new tab)
Visible watermark
Visible watermark optional, false by default. Default position 3 (bottom right); alternatives 1 top left, 2 top right, 4 bottom left. Optional watermark image URL and JSON-string metadata.Source for Visible watermark (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Video generation540p · standard1CN¥0.28125second of output video
Video generation720p · standard2CN¥0.59375second of output video
Video generation1080p · standard3CN¥0.75second of output video
Video generation2K · standard4CN¥1.1875second of output video
Video generation4K · standard5CN¥2.4375second of output video

Rate conditions

  1. 9 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  2. 19 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  3. 24 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  4. 38 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
  5. 78 credits per output second × CNY 0.03125 per credit, calculated from the published regional schedule. Applies to viduq4-preview on POST https://api.vidu.cn/ent/v2/reference2video. Base generation price; prompt expansion, subject creation and other add-ons are separate. Promotions and taxes are excluded.
Pricing source (opens in a new tab)

Data & enterprise terms

Mainland account-specific input-retention and training-use terms remain unverified. Output links expire after 24 hours.

Caching

Caching can reuse earlier input processing. Availability, lifetime and billing depend on the endpoint. A cache hit still generates a new response.

01 / INITIAL INPUTProcess & retain

The system processes eligible input and retains reusable state.

02 / LATER REQUESTCheck available state

Reuse depends on matching input, session state and the cache policy.

03 / CACHE HITReuse & generate

Reusing state can reduce repeated work. Any charges follow the billing rules below.

Vidu API · international · image

viduq4-preview
Not verified

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How it works
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Minimum reusable input
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Lifetime & refresh
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How to enable it
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Usage fields
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Billing rules
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Limits & data boundaries
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Vidu API · international · reference

viduq4-preview
Not verified

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How it works
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Minimum reusable input
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Lifetime & refresh
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How to enable it
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Usage fields
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Billing rules
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Limits & data boundaries
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Vidu API · mainland China · image

viduq4-preview
Not verified

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How it works
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Minimum reusable input
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Lifetime & refresh
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How to enable it
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Usage fields
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Billing rules
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Limits & data boundaries
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Vidu API · mainland China · reference

viduq4-preview
Not verified

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How it works
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Minimum reusable input
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Lifetime & refresh
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

How to enable it
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Usage fields
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Billing rules
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

Limits & data boundaries
Not collected

No explicit prompt-cache or cached-input tariff in the reviewed video contract.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

What the measurements say

No benchmark observations have been added for this model. We do not turn a vendor description into a performance score.

Latency and throughput depend on the host, request size, reasoning settings and load. There is no measured speed or global usage figure in this record.

The record behind the model

Why it is included

Qualified closed-weight classification inference from a separately named Vidu native hosted model and operator terms reserving proprietary service rights. Public API clients and efficiency libraries do not establish downloadable weights. Exact checkpoint lineage remains unverified.

Classification evidence (opens in a new tab)

Lifecycle dates

Native API availability7 Oct 2026Source (opens in a new tab)

Sources reviewed