English
video_generate.kling_v3_4k_t2v_novita
kuaishou/kling-3-0/text-to-video
text-to-video

The Kling 3.0 API generates a native 4K video clip from a natural-language prompt (Kuaishou Kling v3.0 4K). 3 to 15-second clips with optional driving audio, configurable CFG scale, and negative prompts — all through one REST endpoint, priced 5% below the official rate.

Input
The text prompt sent to the model
Output
Sample edited image — run the model to replace this previewSampleRun the model to replace this preview

Kling 3.0 API: Text to Video

Use the Kling 3.0 API to generate a native 4K clip directly from a natural-language prompt — no seed image needed.

The Kling 3.0 API generates a native 4K video clip directly from a natural-language prompt (Kuaishou Kling v3.0 4K). It renders 3-to-15-second clips with selectable aspect ratio (16:9, 9:16, 1:1), optional driving audio, configurable CFG scale, and negative prompts — no seed image required, all through one REST endpoint.

Pricing on the Kling 3.0 API is 5% below the official rate: $1.995 per default 5-second 4K clip, $3.99 at 10 seconds. The per-second rate scales linearly across the 3–15 second range. One RouterBase key works alongside 200+ other models — no provider-specific SDK.

Why this model

Six reasons teams ship on the Kling 3.0 API

From native 4K renders to aspect-aware composition — what the Kling 3.0 API gets right for text-to-video.

Native 4K renders

The Kling 3.0 API renders directly at 4K — no upscaling pass, no fidelity loss when re-encoding for HDR delivery or vertical reels.

Pure text-to-video

No seed image required — pass a prompt and the Kling 3.0 API composes scene, lighting, and motion from scratch in a single REST call.

Aspect-ratio control

Choose 16:9 widescreen, 9:16 vertical, or 1:1 square per call. The Kling 3.0 API frames composition and camera motion for the target ratio at render time.

Optional driving audio

Toggle an audio track to drive rhythm and timing; the Kling 3.0 API aligns motion accents to the waveform in the same call — no separate post step.

CFG + negative prompts

Configurable CFG scale plus negative prompts give fine-grained control over how literally the Kling 3.0 API follows the natural-language prompt at render time.

5% off the official rate

Pay 5% less than the official rate when calling through the Kling 3.0 API. $1.995 per 5-second 4K clip, $3.99 at 10s — flat across prompt complexity.

RouterBase dashboard preview
Quickstart

Get started with the Kling 3.0 API in 3 steps

From sign-up to your first Kling 3.0 API call in under 5 minutes.

  1. Create a RouterBase API key

    Sign up and generate sk-rb-… — one key works across the Kling 3.0 API and 200+ other models on RouterBase.

  2. POST the prompt

    Send the prompt, aspect ratio, and duration in JSON to the Kling 3.0 API endpoint. The call is async — RouterBase polls upstream until the render completes (typically 1–3 minutes), then returns a signed URL with the native 4K clip.

  3. Inspect the result

    Each Kling 3.0 API response includes generation metadata for auditing and a 4K render URL ready to embed in your product.

Get API Key Read docs
Pricing

Pay only for what you use

RouterBase passes through partner-tier pricing. Compared against the model's official published API rate.

ResolutionRouterBaseOfficialSave
sound=false 5s$1.995$2.100−5%
sound=true 5s$2.993$3.150−5%

About $0.399 per second.One run at the default settings (sound=false) costs $1.995.

Customer stories

What teams build with the Kling 3.0 API

Real production loads running on the RouterBase model catalog across 200+ models.

Marcus Reyes
Marcus ReyesCTO, Paradigm AI

A one-line prompt becomes a hero video reel via the Kling 3.0 API in under three minutes — we replaced our entire stock-footage budget.

Priya Lakshmi
Priya LakshmiFounder, Quillo

We swapped three providers through RouterBase in one line of code when OpenAI had its outage. Our users never noticed.

Thomas Beck
Thomas BeckStaff Engineer, Northbeam

The Kling 3.0 API ships 16:9, 9:16, and 1:1 in a single endpoint — our reels and YouTube pipelines run the same call with one parameter swap.

Aoi Tanaka
Aoi TanakaML Lead, Daybreak Robotics

Driving audio plus prompt-only generation in one Kling 3.0 API call removed two manual passes from our short-form workflow.

Jonas Keller
Jonas KellerIndie Developer

Plugged the Kling 3.0 API into my existing OpenAI SDK with one base URL swap — less work than writing this testimonial.

Ethan Nguyen
Ethan NguyenHead of Engineering, Compound Studio

RouterBase puts 200+ models behind one key. Our research team stopped asking for new provider accounts.

Sophia Martín
Sophia MartínCTO, Relay

Native 4K text-to-video out of the Kling 3.0 API means we ship to HDR delivery targets without a re-encode tax in post.

Lucas Fernandes
Lucas FernandesEngineering Manager, Light

We migrated 42 services to RouterBase over a weekend. The only PR comment we got was 'wait, that's all?'.

David Okonkwo
David OkonkwoCo-founder, Figment

The Kling 3.0 API is 5% below the official rate at every duration — at our scale that's six figures saved per quarter on video alone.

Frequently Asked Questions

Common questions about the Kling 3.0 API.

The Kling 3.0 API is RouterBase's pass-through to Kuaishou Kling v3.0 4K text-to-video. It generates a native 4K clip directly from a natural-language prompt — 3–15 second durations, selectable aspect ratio, optional driving audio, configurable CFG scale, and negative prompts.