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Kling 4.0 is Kling AI’s video generation model, available in ComfyUI as Partner Nodes. One generation runs up to 30 seconds at 720p or 1080p, and produces stereo audio alongside the picture. Four templates cover the workflows below. Each node also offers a faster kling-4.0-flash model option, limited to 720p and 20 seconds.
To use the Partner Nodes, you need to ensure that you are logged in properly and using a permitted network environment. Please refer to the Partner Nodes Overview section of the documentation to understand the specific requirements for using the Partner Nodes.
Make sure your ComfyUI is updated.Workflows in this guide can be found in the Workflow Templates. If you can’t find them in the template, your ComfyUI may be outdated.If nodes are missing when loading a workflow, possible reasons:
  1. You are not using the latest ComfyUI version (Nightly version)
  2. Some nodes failed to import at startup

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Kling 4.0: Text to Video

Generates a clip from a prompt alone. Describe the shots and their camera moves in order, because one run can hold several cuts.

Run on Comfy Cloud

Open in Comfy Cloud

Download Workflow

Download JSON or search “Kling 4.0: Text to Video” in Template Library

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Kling 4.0: Image to Video

Animates one still, or a sequence of keyframes: an optional first frame, up to eight middle frames, and an optional last frame, ten images in total. The clip takes the aspect ratio of the first keyframe. kling-4.0-flash animates a single first frame.

Run on Comfy Cloud

Open in Comfy Cloud

Download Workflow

Download JSON or search “Kling 4.0: Image to Video” in Template Library
Input material

kling4_editorial_portrait.png

Load into first_frame

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Kling 4.0: Reference to Video

Shoots a new clip from references instead of a single starting frame: up to ten reference images (the optional frames count toward that limit) and five reference clips, with an optional last frame on kling-4.0. Refer to them in the prompt as @Image1 and @Video1, in connection order.

Run on Comfy Cloud

Open in Comfy Cloud

Download Workflow

Download JSON or search “Kling 4.0: Reference to Video” in Template Library
Input materials

kling4_r2v_woman_copper_bob.png

Character reference, load into reference_images

kling4_r2v_brutalist_hall.png

Location reference, load into reference_images

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Kling 4.0: Video Edit

Rewrites a clip you already have. The result keeps the length of video_1, and audio set to original keeps the source audio instead of generating new sound.

Run on Comfy Cloud

Open in Comfy Cloud

Download Workflow

Download JSON or search “Kling 4.0: Video Edit” in Template Library
Input material

kling4_gown_input.mp4

Load into video_1

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Input limits

  • Images: at least 300 x 300 px, aspect ratio between 2:5 and 5:2, up to ten per run, keyframes included.
  • Videos: each 3 to 30 seconds (3 to 20 with kling-4.0-flash), all connected clips 30 seconds in total, at least 24 fps, 700 to 4553 px per side, at most 8,294,400 px in total, aspect ratio between 2:5 and 5:2.
  • In the image, reference, and edit nodes, a prompt that names @ImageN or @VideoN beyond the number of connected inputs fails the run.
Every parameter is listed on the node reference pages: Text to Video, Image to Video, Reference to Video, Edit Video.