Kling 4.0 API: Access, Pricing & Alternatives

There is no public Kling 4.0 API yet. Where early access stands, what pricing to expect, and which Kling 3.0 endpoints developers can call today.

Last updated: 2026-10-14

Kling 4.0 isn't available here yet. New clips use Kling 3.0 by default, and each clip in your library shows which model made it. We'll turn on Kling 4.0 once we've tested it on this site.

Is there a Kling 4.0 API?

Not a public one, as of 14 October 2026. Kuaishou has not opened Kling 4.0 on its developer platform, and fal — the gateway this site uses — lists Kling 4.0 and 4.0 Flash as early access behind a contact form, with endpoint names and prices to be published on the model page at launch.

What you can call today

Kling 3.0 is fully available through fal's queue API. The endpoints this site uses:

Endpoint	Input	List price (fal, audio on)
`fal-ai/kling-video/v3/standard/text-to-video`	prompt, duration 3–15 s, aspect ratio, audio	$0.126 / s
`fal-ai/kling-video/v3/standard/image-to-video`	start image, optional end image, prompt, duration	$0.126 / s

Pro tiers, 4K variants ($0.42/s) and the O3 "Omni" line (reference-to-video) are also listed on fal. Prices change without notice; check the model page before budgeting.

What to expect from the 4.0 API

Per-second billing like 3.0, probably higher for 30-second clips, 4K and HDR.
New inputs for keyframes (up to 10) and reference assets (up to 15).
The same queue pattern: submit, poll status, fetch result.

How this site will add 4.0

When fal publishes the Kling 4.0 endpoint and its price, we set our credit price, run a test render and then switch Kling 4.0 on. The status banner above shows when that happens.

Try Kling now

You can generate text-to-video and image-to-video clips with Kling 3.0 on this site today; your library labels every clip with the model that rendered it. When Kling 4.0 is published and passes our own test render, we switch it on here — the banner at the top of this page is the live status.

Open the generator →

Sources

Kling AI release notes: Meet All-New Kling 4.0
fal: Kling 4.0 early access and What is Kling 4.0 (updated 2026-09-29)
fal model pages for Kling 3.0: v3 standard text-to-video, v3 standard image-to-video
Community first impressions: r/KlingAI_Videos

Facts above are as of 2026-10-14. Specifications are Kuaishou's published claims until independent tests confirm them.