Kling

Kling (by Kuaishou) is Brut's most extensive video provider — a dozen image-to-video models, including the 3.0 line. There are two ways to pay for it: this page covers the REST API (credit packs); see Kling (subscription) for the cheaper plan-billed route.

#Get a key & authentication

Kling supports dual auth, and Brut accepts both:

• New style — an api-key-kling-… token, used as a plain Bearer token.
• Legacy — an AccessKey : SecretKey pair. Store it in Brut as ak:sk (Brut mints the JWT for you).

Get credentials at app.klingai.com/global/dev and paste into ⚙ Settings → Kling.

Heads up on billing: Kling API resource packs expire in 30 days with no rollover. For steady studio use, the subscription option is about 3× cheaper — keep the REST API for high QPS or Team needs.

#Models & features

Twelve image-to-video models (Kling 1.x through 3.0 Turbo). On the node you set duration, resolution, and — where the model supports it — audio and an end frame (Brut's engine-wide convention: the end frame is the second init image).

#Region & docs

• Default base is https://api-singapore.klingai.com; override with the BRUT_KLING_BASE environment variable for mainland China.
• Kling's own docs return HTTP 446 to automated fetchers, so some passthrough knobs (aspect_ratio, audio) are best confirmed by trying them — a wrong knob surfaces the provider's 4xx verbatim on the node.