AI short dramas used to be built clip by clip, and faces broke at every seam. Kling 4.0 plays out a complete scene in one shot of up to 30 seconds, with the dialogue and sound in the same pass. Fix the opening and closing frames with First & Last Frames, then carry the scene on in the Video Extender.




Hailuo vs Kling, tested: MiniMax H3 and Kling 4.0 with the same 6 prompts — dialogue, fast motion, liquid physics, camera moves, on-screen text and image-to-video — plus cost per second.

Kling 4.0 vs Veo 3.1 tested with the same 6 prompts: dialogue, fast motion, liquid physics, camera moves, on-screen text and image-to-video. See the clips, scores and cost per second.

Seedance 2.5 vs Kling 4.0 tested with the same 6 prompts: dialogue, fast motion, liquid physics, camera moves, on-screen text and image-to-video. See the clips, scores and cost per second.
Longer clips need a plan. Describe what happens in each stretch, for example 0–10s, 10–20s and 20–30s, so the pacing follows your story instead of the model's guess.
Audio is always on, so tell Kling 4.0 what to hear. Put spoken lines in quotes and say who speaks them, then name the sound effects and the ambience. If you plan to add music later, ask for quiet room tone instead of a score.
When both the opening and the closing shot matter, upload them in First & Last Frames and keep the prompt about the movement in between rather than about how the two images look.
Kling 4.0 has no separate multi-shot switch. List the shots in order (Shot 1, Shot 2, Shot 3) with the shot size and camera move for each, and repeat the details that must stay the same, such as a character's clothing.
A 5-second test in 720p costs 145 tokens, while a 30-second clip in 1080p costs 1,320. Lock the idea with short 720p drafts, then render the full length in 1080p.
Describe a scene or upload an image, choose 720p or 1080p and a length from 3 to 30 seconds, and Kling 4.0 returns the clip with sound.
Try Kling 4.0