English
video_generate.kling_v3_4k_i2v_novita
kuaishou/kling-3-0/image-to-video
image-to-video

The Kling 3.0 API animates a still image into a native 4K video clip from a natural-language prompt (Kuaishou Kling v3.0 4K). 3 to 15-second clips with first-frame seed, optional end-frame keyframe, 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: Image to Video

Use the Kling 3.0 API to animate a still image into a native 4K clip with natural-language prompts.

The Kling 3.0 API animates a still image into a native 4K video clip from a natural-language prompt (Kuaishou Kling v3.0 4K). It renders 3-to-15-second clips with first-frame seed, optional end-frame keyframe, optional driving audio, configurable CFG scale, and negative prompts — all through one REST endpoint.

Pricing on the Kling 3.0 API is 5% below the official 4K rate: $0.399/s video-only, $0.599/s with audio. A default 5-second 4K clip is $1.995 (video) or $2.99 (video + audio); per-second pricing 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 keyframe-locked motion — what the Kling 3.0 API gets right.

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.

First-frame seed

Pass a still image and the Kling 3.0 API treats it as the seed frame. Identity, lighting, and composition stay locked across the clip.

End-frame keyframe

Optionally pass a target end-frame image and the Kling 3.0 API interpolates the motion path between seed and end — keyframe control without timeline tools.

Driving audio

Toggle an optional audio track to drive lip-sync and rhythm; the Kling 3.0 API aligns mouth shapes and motion accents to the waveform in the same call.

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 4K rate

Pay 5% less than Novita's published Kling v3.0 4K rate ($0.42/s video-only, $0.63/s with audio). $1.995 for a 5-second clip, scaling linearly per second through 15s.

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 base image

    Send the seed image plus prompt 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 still product shot becomes a hero video reel via the Kling 3.0 API in under three minutes — we replaced our entire B-roll vendor pipeline.

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 first-frame seed keeps brand identity locked across a catalog of 500 product clips — no more drift between renders.

Aoi Tanaka
Aoi TanakaML Lead, Daybreak Robotics

Driving audio plus end-frame keyframes in one Kling 3.0 API call removed two manual passes from our localization pipeline.

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 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 image-to-video. It animates a still image into a native 4K clip from a natural-language prompt — 3–15 second durations, first-frame seed, optional end-frame keyframe, optional driving audio, configurable CFG scale, and negative prompts.