Your generated video will appear here
Features
What Kling 2.1 Master API offers
Use cases
Built for
Hero spots - Text-first clips with Pro resolution for ads
Premium social - 1080p vertical or square with simple controls
Product teasers - Optional start image plus prompt for controlled motion
Pitch and review - High resolution exports without exposing lower tiers
Brand safety - One Pro path so QC only tracks one visual profile
FAQ
About Kling 2.1 Master API
Master always renders at Pro level. You can drive it with text alone or add a starting image. Durations stay at 5 or 10 seconds and this schema does not include an end frame field.
Regular 2.1 requires a start image and lets you pick Standard or Pro. Master targets Pro-only text-to-video or text plus image generation with aspect presets on the text route.
Aspect ratio applies when you are not supplying a start image. When you supply a start image, generation follows the image path described in the docs.
Use newer tiers when you need optional audio defaults, end frames on 2.6, longer clips, or multi-shot on 3.0. Master remains useful when you want a single Pro output from the 2.1 generation family.
See the live model pricing table; Master is billed as the premium 2.1 line in that list.