Kling 4.0 vs Veo 3.1

Every row comes from the same tables as the Kling 4.0 and Veo 3.1 pages’ spec sheets, credits included. Veo 3.1 here is a family of three: the full model, Veo 3.1 Fast and Veo 3.1 Lite. When you choose Veo 3.1 at 720p, DreamBench makes the clip on Veo 3.1 Fast.

On DreamBench, both models work from your prompt, or from the reference images and opening frames DreamBench builds for each Film Studio scene. Keyframes, extension, editing and object insertion are features of Kling’s and Google’s own apps and APIs.

Clip length is the difference you feel first. On DreamBench’s Video page, a Kling 4.0 clip runs from 4 to 30 seconds, and a Veo 3.1 clip is 4, 6 or 8. That makes Kling 4.0 the choice for one unbroken moment, such as a market haggle, a penalty and its celebration or a product turned, opened and poured, and Veo 3.1 the choice for one beat told well.

In Film Studio the gap narrows. DreamBench cuts a film into clips of 3 to 12 seconds, each as long as its action takes, and joins them, so a Kling 4.0 scene runs up to 12 seconds and a Veo 3.1 scene up to 8. A Veo 3.1 scene that carries your reference sheets always runs 8 seconds, because Google accepts reference images on 8-second clips only.

The video as a whole runs to the same length on either model: up to 30 seconds on Starter, 2 minutes on Plus and 5 minutes on Ultra and Studio. Veo 3.1 simply needs more scenes to get there, and every scene is one you can redo on its own.

Kling 4.0, not Veo 3.1

• One clip of up to 30 seconds on the Video page, with Kling planning its own shots inside a long take unless you ask for one continuous take.
• Dialogue in 9 languages, from Chinese and Hindi to Brazilian Portuguese, in a dialect or accent you name.
• Square, 21:9 and, in Film Studio, 4:3 frames.
• Stereo sound in two channels.

Veo 3.1, not Kling 4.0

• 4K from the full model, on Plus, Ultra and Studio.
• Two lighter tiers, Veo 3.1 Fast and Veo 3.1 Lite, for drafts and volume on every plan.
• Your reference sheets sent to the model itself in Film Studio, up to 3 a scene on the full model; Fast and Lite animate an opening frame built from them instead.
• Tools of its own on DreamBench: the Veo 3.1 prompt generator writes prompts in Google’s formula.

Where each falls short: Veo 3.1 can’t frame anything but 16:9 and 9:16, its clips stop at 8 seconds, and Google is candid that short spoken lines can still sound unnatural. Kling 4.0 stops at 1080p on DreamBench, its sound can’t be switched off, and on the Video page it has no 4:3.

Google’s guide for Veo 3.1 gives a formula for one shot: the cinematography, then the subject, the action, the context, and the style and ambience. Kling’s guide for 4.0 gives an order for a whole take: the overall settings, then a timed sequence of events, then the audio. The first describes a moment; the second schedules one.

• Dialogue: both want the words inside quotation marks, given to a speaker. On Kling 4.0, write the line in the language it should be spoken in; on Veo 3.1, write it in English.
• Sound: Google labels it in separate sentences, “SFX: thunder cracks in the distance” and “Ambient noise: …”. Kling puts the sound at the end, after the events, with who says what.
• Time: on Veo 3.1, Google shows timestamps such as [00:00-00:02] to set several shots inside one 8-second generation. On Kling 4.0, ranges such as “From 0 to 10 seconds: …” carry a take to 30.
• What to leave out: both makers prefer a description of what is there. Google suggests “a desolate landscape with no buildings or roads” over a bare “no”; Kling keeps two negatives, no subtitles and no background music.

On the Video page, a Kling 4.0 prompt can run to 2,500 characters and a Veo 3.1 prompt to 2,600, sent to the model as typed. The Veo 3.1 prompt guide works through Google’s formula with examples; in Film Studio, DreamBench writes each scene’s prompt for the model you pick.

Kling 4.0 is on every DreamBench plan at 720p and 1080p, with one rate per resolution because its sound is always on. Veo 3.1 Fast and Veo 3.1 Lite are on every plan too; the full Veo 3.1 model, which renders 1080p and 4K, needs Plus, Ultra or Studio.

Which costs less depends on the resolution and the tier. The table at the top of this page lists each model’s credits per second, from the rates the composer quotes. A Video page clip costs less than a Film Studio video of the same length on either model, because it has no scene plan, cast or opening frames, and the composer shows the exact cost before you generate.

A Film Studio video uses one model for every scene. To see both on your own idea, make it once on each. For Kling 4.0 against its own predecessor, see Kling 4.0 vs Kling 3.0.