Kling 4.0 vs Kling 3.0

Kling AI released Kling 4.0 in October 2026, eight months after Kling 3.0, and DreamBench runs both. Kling’s page for 4.0 and its user guides for the two models set out what changed:

• Length: one generation runs from 3 to 30 seconds, where Kling 3.0 stops at 15.
• Languages: dialogue in 9 languages instead of 5. Kling 4.0 adds Portuguese, German, French and Hindi to Chinese, English, Japanese, Korean and Spanish, and keeps the dialects and accents, such as Cantonese, Sichuanese and British or Indian English.
• Sound: two-channel stereo, generated with the picture on every clip. Kling 3.0 has a mode without native audio; Kling 4.0 has none.
• Motion: Kling says 4.0 holds movement steadier through fast fights, sport and large-scale action, and in contact between people and objects, while the camera tracks, orbits or pushes in.
• Control, in Kling’s own app: up to 10 keyframes along the timeline instead of a start and an end frame, up to 15 references in one generation, editing of an existing video, and creative recreation, which reuses a clip’s pacing and composition with new characters or products.
• Lettering: Kling marks text in several languages as new for 4.0, and says it stays readable as the camera and the scene move.

Kling also describes a higher-resolution tier, 10-bit HDR and an extension to 2 minutes as coming soon. DreamBench renders both models at 720p and 1080p and doesn’t offer the extension.

Every row comes from the same tables as the Kling 4.0 and Kling 3.0 pages’ spec sheets, credits included, so it says what DreamBench offers today. The composer shows a video’s exact cost before you generate.

One difference the rows don’t show is where each model runs. Kling 4.0 is in two places: in Film Studio it makes every scene of a planned video, and on the Video page your prompt goes straight to it as one clip of 4 to 30 seconds. Kling 3.0 is in Film Studio only, because its route starts every clip from a picture, and the Video page takes words alone.

DreamBench uses each model’s core: your prompt, or the opening frame DreamBench makes for each scene. Keyframes, Omni Reference, voice profiles and editing are features of Kling’s own app and API, and DreamBench doesn’t offer them with either model yet.

Only Kling 4.0, on DreamBench

• A single clip of up to 30 seconds from the Video page, in 16:9, 9:16, 1:1 or 21:9.
• Dialogue in Portuguese, German, French and Hindi, on top of the 5 languages both speak.
• Stereo sound with every clip, with effects and ambience that follow the action.

Only Kling 3.0, on DreamBench

• Sound you can switch off, at a lower rate per second.
• Tools of its own: the logo animation tool runs on it, and the Kling 3.0 prompt generator writes prompts in its grammar.

What both do: 720p and 1080p, the same five aspect ratios in Film Studio, where a clip takes the shape of its opening frame, up to 8 reference images a video, each tagged as a character, creature, location or prop, and a redo of any scene without remaking the rest. Both are on every plan.

A Kling 3.0 prompt still works on Kling 4.0, but a 30-second take needs more in it. Kling’s 3.0 guide marks beats by the second (“At the 4th second”) or numbers the shots; its 4.0 guide sets an order: the overall settings first, meaning the place, the look and the camera, then a timed sequence of events, then the audio.

• Time the events in ranges that cover the whole clip: “From 0 to 10 seconds: …”, then “From 10 to 20 seconds: …”. A 30-second take needs three or four beats, not one.
• Write each spoken line in its own language, inside quotation marks, after a named speaker and how they say it: The vendor (cheerfully, in Brazilian Portuguese): “Olha a manga!” The same form works on Kling 3.0, in its 5 languages.
• Describe what is there rather than what isn’t. Kling’s 4.0 guide advises against negative instructions, with two exceptions worth keeping: no subtitles and no background music.
• On Kling 4.0, say what the clip should sound like, since it always makes sound. On Kling 3.0, switch sound off if the clip will be scored later.
• Ask for “one continuous take” when you want no cuts: Kling 4.0 may plan its own shots inside a long clip.

On the Video page a Kling 4.0 prompt can run to 2,500 characters, well under what Kling’s own app accepts, so keep the settings tight and spend the words on the events. In Film Studio, DreamBench writes each scene’s prompt for you. The Kling 3.0 prompt guide covers camera terms and dialogue that carry over to 4.0.

Kling 3.0 stays on DreamBench, so nothing you made or planned on it stops working. Move a video to Kling 4.0 when it needs what only 4.0 has: a take longer than 15 seconds, one of the four added languages, stereo sound or a single clip from the Video page. Stay on Kling 3.0 when the clip should be silent or when it is a logo.

A Film Studio video uses one model for every scene, so the two can’t share a video. To compare them on your own idea, make the same video twice, once on each, and keep the one you prefer. For how Kling 3.0 compares with models from other makers, see Veo 3.1 vs Kling 3.0 and Seedance 2.5 vs Kling 3.0.

Kling 4.0 Flash, which Kling describes as faster and lower in cost, shows as Soon in DreamBench’s model menu and can’t be used yet. The Kling 4.0 you pick is the full model.