Seedance vs Kling vs Veo (2026): Seedance 2.5, Kling 3.0 and Veo 3.1 Compared for Ads

In short — There's no single winner between Seedance, Kling and Veo; each leads on something different. Veo 3.1 is the cheapest per second (Lite, $1.74 for 8 seconds) and the one Google positions on prompt adherence, but it only renders 16:9 or 9:16 and stops at 8 seconds per clip. Kling 3.0 is built for people talking: native lip-sync, clips up to 15 seconds and square 1:1. Seedance has the widest range: Seedance 2.0 from a $2.32 test clip to 1080p, and Seedance 2.5 with clips up to 30 seconds, six aspect ratios and 4K. For ads, a finished 3-clip vertical ad costs from $5.51 (Veo 3.1 Lite) to $64.67 (Veo 3.1 Pro 4K). Test on a cheap tier, then move the winner to a premium one.

Disclosure: Klaivo is our product. We run 15 variants of these three families in production, so the specs and prices below are the ones we ship with, at retail prices you can check on our pricing page. Capability claims come from each vendor's own documentation, linked inline. We don't publish a single "quality score": ad quality depends too much on the product and the prompt.

Quick verdict: which model wins what

The rest of this guide explains each line with numbers.

Which versions are current (October 2026)

Comparisons online mix versions, which is why their verdicts disagree. Some still test Seedance 1.8, Veo 3.0 and Kling 2.6. This one covers the versions we run today:

• Seedance 2.0 (Mini, standard, Fast, Pro, VIP) and Seedance 2.5, from ByteDance.
• Kling 3.0 (Standard, Pro, Omni Standard and Pro, Turbo Standard and Pro), from Kuaishou.
• Veo 3.1 (Lite, Fast, Pro), from Google.

Kling 4.0 is now available on Kling's own paid plans (Kling membership page, October 2026), but it isn't in our pipeline yet, so we don't compare it here.

Specs side by side

What each family accepts in production, as we run it.

Sources: Seedance 2.0 launch post, Kling Video 3.0, Veo in the Gemini API. One detail matters more than it looks: on Veo, 1080p and 4K are only available at 8 seconds, so you can't buy a shorter, cheaper high-resolution clip.

What a finished ad costs on each model

A single clip isn't an ad. The unit that matters is a 3-clip vertical ad: hook, benefit, call to action, with background music. Models with native audio can speak the script themselves; otherwise you add a voiceover. Prices are Klaivo retail at $0.29 per credit (Starter plan; Growth and Scale lower the per-credit price).

Klaivo retail pricing. Seedance 2.0, Veo and Kling rows read on 13 September 2026 (Kling re-checked 28 September); Seedance 2.5 rows from the vendor price list read on 13 September 2026. On Kling, the model's own audio costs extra: the native-audio column uses the speaking price, the voiceover column the silent one. Each figure is derived from the vendor's per-second price for that model and resolution, converted at our credit rate; read it as a snapshot rather than a quote. Music is included in both columns.

Three things are easy to miss:

• Veo clips are 8 seconds, the others 5. Three Veo clips make a 24-second ad; three Seedance or Kling clips make 15 seconds. Per second of finished ad, Veo 3.1 Lite is among the cheapest options we run.
• Seedance 2.5 can replace three clips with one. A single 30-second clip at 720p costs $59.16, more than three 5-second clips, but gives one continuous take with no cuts to stitch.
• The top tier costs nearly 12× the bottom one for the same ad structure. Testing ten variants a week, that's the difference between about $55 and $647 in generation.

For the hidden costs (retries, voiceover, failed renders), see what an AI video ad really costs.

Seedance 2.0 and 2.5: the flexible all-rounder

What ByteDance says it does. Seedance 2.0 is a joint audio-video model: it accepts text, image, audio and video references (up to 9 images, 3 videos and 3 audio clips per request) and outputs up to 15 seconds of multi-shot video with dual-channel audio (ByteDance). Seedance 2.5, announced in June 2026, extends a single clip to 30 seconds in our pipeline, from 480p to 4K.

Why it matters for ads.

• The widest price ladder. Mini at 480p is a $2.32 test clip; 2.5 in 4K is a $49.30 hero clip. You can stay in the same family from testing to scaling.
• More aspect ratios. Seedance 2.5 and the Mini, Fast, Pro and VIP variants cover 21:9 to 3:4, including 1:1. Only the base 2.0 model doesn't do square.
• Native audio. The subject can speak your line, which removes the voiceover step on UGC-style clips. We confirmed native audio on Seedance 2.5 in September 2026.
• One long take. A 20- or 30-second clip from 2.5 suits demos and testimonials that lose their rhythm when cut.

Where it's weaker. At 480p, fine product details such as small print on packaging are the first thing to go. If your product has text that matters, test at 720p before concluding the model can't do it. Seedance 2.5 at 1080p and 4K is expensive for testing.

Kling 3.0: built for people talking

What Kuaishou says it does. Kling Video 3.0 generates up to 15 seconds per clip, with multi-shot sequences, native audio with character lip-sync, multi-character dialogue and on-screen text rendering (Kling).

Why it matters for ads.

• Talking-head UGC. Omni Standard is $3.48 a speaking clip, or $2.61 with the audio switched off for a voiceover, and you choose per clip. If your angle is a person recommending the product, you get a lip-synced line in vertical, square or landscape.
• Native 1:1. Kling covers 16:9, 9:16 and square, which suits Facebook and Instagram Feed placements without cropping.
• Long clips. Up to 15 seconds lets one clip carry a full testimonial instead of three stitched ones.

Where it's weaker. Kling has no resolution selector in our pipeline: you pick a variant (Standard, Pro, Omni, Turbo), not a pixel count. The Turbo variants expose no audio setting; we treat them as native audio but haven't verified it on every render, so we don't recommend them for talking clips yet.

Veo 3.1: built for prompt adherence

What Google says it does. Google positions Veo 3.1 on greater prompt adherence and better audio-visual quality when animating a source image, with synchronized dialogue and sound effects generated on every clip (Google Cloud, Gemini API).

Why it matters for ads.

• Staging. When a clip needs a specific action ("a hand places the bottle on the left of the sink, label facing camera"), prompt adherence is what you pay for.
• Cheapest per second. Lite at 720p is $1.74 for 8 seconds, the lowest per-second cost we run.
• Timestamp prompting. Google documents a [00:00-00:02] syntax for several beats inside one 8-second clip, useful for a fast hook (see our prompt guide for product ads).

Where it's weaker.

• Two formats only. 16:9 and 9:16, so no square Feed ad without cropping.
• Fixed length. 8 seconds is the only length at 1080p and 4K, which makes a 3-clip Veo ad 24 seconds long, often longer than a TikTok hook test needs.
• Audio can't be switched off. It's always generated, so if you add a voiceover, the model's audio has to be muted in the edit.

What independent tests found

Side-by-side tests published this year point the same way, with the caveat that most used older versions and one prompt per test:

• Kapwing's March 2026 test (Seedance 1.8, Veo 3.0, Kling 2.6, text-to-video only) gave product integrity and multi-shot coherence to Veo, realistic motion and character consistency to Seedance, and cinematic mood to Kling. In its product test, Seedance generated earbuds when asked for over-ear headphones.
• Most roundups agree on the broad split: Veo for polished, precisely staged shots, Kling for people and motion, Seedance for reliable volume at a lower price.

For product ads, one factor outweighs the model: image-to-video. Animating your real product photo keeps the item recognisable on every model; text-only prompts invent it. That's why Kapwing's headphone mistake happened in a text-to-video test. See image-to-video for product ads.

Native audio vs voiceover: the choice that matters more than the model

All three families generate sound, but you shouldn't always use it.

• Use native audio when the ad is a person talking to camera. The lip-sync is the whole point, and a separate voiceover over a moving mouth looks wrong.
• Use a voiceover when the product is the hero: macro shots, packshots, hands demonstrating. You control every word, keep the same voice across all clips, and avoid the model inventing dialogue.

Decide the creative angle first (person or product), then the audio mode, and only then the model. Picking the model first is how teams end up paying for lip-sync they mute.

A routing rule that survives real budgets

1. Test hooks on the cheapest tier that renders your product legibly, usually Veo 3.1 Lite or Seedance 2.0 Mini (under $8 per 3-clip ad).
2. Regenerate the winning script on a mid tier (Seedance 2.0 at 720p, Veo 3.1 Fast, Kling 3.0 Standard) before putting spend behind it.
3. Reserve Pro, VIP, Seedance 2.5 and 4K for the two or three creatives that prove themselves. Feed video is watched on phones, and 4K rarely pays for itself in a performance ad.
4. If your product has fine text or complex geometry, start one tier higher. A rejected render costs as much as a good one, plus your time.

This only works if your tool lets you change models without rebuilding the ad, which is why Klaivo runs several model families behind one script. How many variants to test per week is covered in how many ad creatives you actually need.

FAQ

Which is better: Seedance, Kling or Veo?

None wins everywhere. Veo 3.1 is the cheapest per second and strongest on precise staging; Kling 3.0 is best for people speaking, with native lip-sync and square format; Seedance has the widest range of prices, formats and lengths, up to 30-second clips with Seedance 2.5.

Which is the cheapest?

Per second of video, Veo 3.1 Lite ($1.74 for 8 seconds at 720p in Klaivo). Per clip, Seedance 2.0 Mini ($2.32 for 5 seconds at 480p). A complete 3-clip ad starts at $5.51 on Veo 3.1 Lite.

Which is better for UGC ads, Kling 3.0 or Seedance?

For a person speaking to camera, Kling 3.0 Omni Standard ($3.48 a speaking clip) also renders square. If price comes first, Seedance 2.0 Mini and Veo 3.1 Lite generate native audio for less. Seedance suits ads that mix talking clips and product clips.

Is Seedance 2.5 available?

Yes, through platforms that run it, including Klaivo, where it makes clips of 5 to 30 seconds from 480p to 4K, with native audio. A 5-second 720p clip costs $9.86.

Is Veo 3.1 worth the price for ads?

Veo 3.1 Lite and Fast are among the cheapest per second. The expensive tier is Veo 3.1 Pro at 1080p or 4K ($57–$65 per finished ad), worth it for hero creative, rarely for testing.

Can Veo 3.1 make square 1:1 ads?

No. Veo 3.1 renders 16:9 or 9:16 only. For a native square Feed ad, use Kling 3.0, Seedance 2.5 or a Seedance 2.0 variant (Mini, Fast, Pro, VIP).

Which model keeps my product most accurate?

Image-to-video matters more than the model: animating your real product photo keeps the item recognisable, whereas text-only prompts invent it. All three families support it.