Kling v3.0 4K is the native-4K text-to-video mode of Kuaishou's Kling 3.0 model family. Unlike "4K" output that is generated at 1080p and stretched by a separate upscaler, Kling v3.0 4K renders every frame directly at 3840×2160, so detail in skin, hair, fabric weave, and hard edges is generated rather than reconstructed afterward. The model runs on Kuaishou's Omni One architecture, which processes video, audio, and motion in a single pass and applies physics reasoning (gravity, contact, deformation) instead of relying on the prompt alone to animate a scene.
On GPTProto the model is exposed as a text-to-video generator. You send a prompt and a few parameters; you get back a 4K clip. Output matches the official Kling 3.0 4K model — GPTProto routes to the same model, not a re-hosted or reduced variant. The same account, balance, and API key also reach the other Kling tiers and 200+ models across other providers, so you can switch models without opening new accounts.
Specifications
| Spec | Value |
|---|---|
| Provider | Kuaishou (Kling) |
| Model string | kling-v3.0-4k |
| Modality | Text-to-video |
| Output resolution | Native 4K — 3840×2160 (not upscaled) |
| Frame rate | Up to 60fps in the 4K mode (model-level). The GPTProto endpoint exposes no fps selector — confirm whether output fps is fixed |
| Duration | 3–13 s (per the GPTProto pricing table). The model natively supports up to 15 s; confirm whether GPTProto caps at 13 s |
| Native audio | Via the sound boolean (ambient / SFX / music). Dialogue lip-sync in the 4K text-to-video mode is — see Feature block 3 flag |
| Aspect ratio | 16:9 confirmed; other ratios |
| Multi-shot | The 3.0 model supports up to 6 camera cuts within a 15 s window; whether this is exposed in the GPTProto text-to-video endpoint is |
| Character consistency | Subject Binding 3.0 (model-level) |
| Input fields | prompt, negative_prompt, cfg_scale, aspect_ratio, sound, duration |
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Endpoint |
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Switching from the official Kling API
If you're already calling Kling directly, the move is small: point your requests at the GPTProto endpoint and use the model string kling-v3.0-4k. What changes is the surrounding friction, not the model:
- Billing. Kling's official developer API runs on prepaid resource packages held separately from any consumer subscription, with multi-month commitments on some tiers. On GPTProto it's pay-as-you-go from your shared balance — no separate pack, no commitment.
- One account, many models. The same key reaches the other Kling tiers (
kling-v3-omni-pro,kling-v3.0-pro,kling-v3.0-std) and 200+ models from other providers. You can fall back to a cheaper draft model and return to 4K without a second integration. - Sign-up access. No region-gated or invite-gated onboarding to clear before you can call the model.
We do not claim a lower price than calling Kling directly. The reason to route through GPTProto here is account/billing consolidation and access, not unit cost.
