Kling 4.0 Flash Omni Video API
Kling 4.0 Flash Omni Video is Kuaishou's lighter, faster video model supporting text-to-video, image-to-video, and Omni Reference input with 3–20 second clips at 720p.
Kling 4.0 Flash Omni Video is a video generation model from Kuaishou, released in limited early access on September 28, 2026, with an official announcement on September 30, 2026. It is positioned as a faster, lighter variant of Kling 4.0 for high-frequency creation. It supports text-to-video generation, image-to-video generation, and Omni Reference multimodal reference input, producing clips of 3 to 20 seconds at 720p resolution in 8-bit SDR color.
This model suits rapid draft generation, batch social media content production, creative concept validation, and batch generation of ad creative variants for selection. It also fits workflows that require fast iteration on prompts and reference assets. Its single-generation length of 20 seconds is an increase over Kling 3.0's maximum of 15 seconds, and it is available through third-party providers. Early external testers reported good motion performance, prompt understanding, and dialogue sync.
Kling 4.0 Flash does not support first-frame and last-frame control or multiple keyframes, and it outputs only 720p 8-bit SDR without HDR. It does not inherit full Kling 4.0 flagship specifications such as 3 to 30 second generation, up to 4K resolution, 10-bit HDR, or up to 10 keyframes, and it is not suitable as a final deliverable requiring native 1080p or 4K. Public API availability was not established as of October 1, 2026.
Updated:
MODEL ID
kling-4.0-flash/omni-video- Input
- text / image / video
- Output
- video
Highlights
- Text, image, and Omni Reference input
- 3 to 20 second clips per generation
- 720p output in 8-bit SDR
- Faster, lighter variant for frequent creation
- 20-second clips, up from Kling 3.0's 15 seconds
- Available through third-party providers
Providers
Compare API prices across providers. Select a provider to view all charges and conditions.
| Uptime | |
|---|---|
Historical observations are not a live health check. Missing data does not mean an outage.
Benchmarks
- #5
Video clip length ranking
Ranked among 63 models based on a 20-second longest single clip
- #509
Popularity ranking
Ranked among 785 models with a score of 31, a month-over-month change of +31
Scores as published by the model provider.
API reference
Model-specific protocol details are not published. Check the API reference for integration requirements.
API reference →Frequently asked questions
What is Kling 4.0 Flash Omni Video?
Kling 4.0 Flash Omni Video is a video generation model from Kuaishou, released in limited early access on September 28, 2026, with an official announcement on September 30, 2026. It is positioned as a faster, lighter variant of Kling 4.0 for high-frequency creation. It supports text-to-video generation, image-to-video generation, and Omni Reference multimodal reference input, producing clips of 3 to 20 seconds at 720p resolution in 8-bit SDR color. This model suits rapid draft generation, batch social media content production, creative concept validation, and batch generation of ad creative variants for selection. It also fits workflows that require fast iteration on prompts and reference assets. Its single-generation length of 20 seconds is an increase over Kling 3.0's maximum of 15 seconds, and it is available through third-party providers. Early external testers reported good motion performance, prompt understanding, and dialogue sync. Kling 4.0 Flash does not support first-frame and last-frame control or multiple keyframes, and it outputs only 720p 8-bit SDR without HDR. It does not inherit full Kling 4.0 flagship specifications such as 3 to 30 second generation, up to 4K resolution, 10-bit HDR, or up to 10 keyframes, and it is not suitable as a final deliverable requiring native 1080p or 4K. Public API availability was not established as of October 1, 2026.
How is usage billed?
Your bill depends on the provider you use, its prices and your usage. Longer inputs or other conditions may have different prices.
What input modes does Kling 4.0 Flash support?
It supports text-to-video generation, image-to-video generation, and Omni Reference multimodal reference input.
How long are the generated clips and at what resolution?
Each generation produces a clip of 3 to 20 seconds at 720p resolution in 8-bit SDR color.
What tasks is Kling 4.0 Flash best suited for?
It is designed for rapid draft generation, batch social media content production, creative concept validation, and fast iteration on prompts and reference assets.
How does Kling 4.0 Flash differ from Kling 4.0?
It is a faster, lighter variant that does not inherit flagship specs such as 3 to 30 second generation, up to 4K resolution, 10-bit HDR, up to 10 keyframes, or multimodal editing.
Does Kling 4.0 Flash support keyframe control?
No, it does not support first-frame and last-frame control or multiple keyframes.
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