Kling vs Seedance: length, resolution and cost per second

Kling and Seedance are the two families on VdoBloom that both bill per second and both offer a 4K tier, which makes them directly comparable in a way most model pairs are not. The differences that matter are the duration ceiling, the resolution floor and what 4K actually costs.

Seedance wins on range. Seedance 2.5 runs a single 30-second generation, double Kling's 15-second maximum, and Seedance drops to 480p when you just want a cheap test — Kling's cheapest resolution is 720p. Kling wins on 4K economics: Kling 3.0's 4K mode is 26.8 credits per second, while Seedance 2 at 4K works out to roughly 83 credits per second.

Both families also handle photo animation, but through different variants — and that is where the two rosters stop overlapping.

Compare Kling and Seedance yourself

What this tool does

  • Maximum clip length: Kling V3 Turbo and Kling 3.0 stop at 15 seconds; Seedance 2.5 generates up to 30 seconds in a single job.
  • Kling 3.0's 4K mode costs 26.8 credits per second, while Seedance 2 at 4K costs 414 credits for 5 seconds — roughly 83 credits per second.
  • Cheapest per second: Seedance 1.5 Pro at 480p is 0.75 credits/sec; Kling 3.0's cheapest tier (standard, no sound) is 5.6 credits/sec.
  • At 720p, Kling V3 Turbo is 7.2 credits per second while Seedance 2 is about 16.4 credits per second (82 credits for 5 seconds).
  • Resolution floor: Seedance 2 and Seedance 2.5 run as low as 480p; every Kling resolution option on VdoBloom starts at 720p.
  • Kling 3.0 and Kling V2.6 have an explicit sound toggle — Kling 3.0 standard goes 5.6 to 8.0 credits/sec, Kling V2.6 image-to-video doubles from 22 to 44 credits for 5 seconds.
  • Seedance 1.5 Pro doubles its per-second rate when audio is enabled (1080p goes from 3.0 to 6.0 credits/sec), and the Seedance 2 family generates audio by default.
  • Aspect ratios: Seedance 2 and Seedance 1.5 Pro both support 21:9; Kling V3 Turbo text-to-video and Kling 3.0 are limited to 1:1, 9:16 and 16:9.
  • Kling V2.5 Turbo and Kling V2.6 are image-to-video only at 5 or 10 seconds (40/80 and 22/44 credits); Kling 3.0 and Seedance 1.5 Pro work from either text or a start image.
  • Seedance 2.5 at 480p costs 276 credits for a full 30 seconds; a 15-second Kling V3 Turbo clip at 720p costs 108.

How it works

  1. 1.Start from the clip length you need

    Anything up to 15 seconds is fair game for both. Past 15 seconds, only Seedance 2.5 can do it in a single generation, up to 30 seconds.

  2. 2.Test at the lowest resolution the family offers

    Seedance lets you sanity-check a prompt at 480p (Seedance 1.5 Pro is 0.75 credits/sec there). Kling's cheapest test is 720p on Kling 3.0 standard at 5.6 credits per second.

  3. 3.Compare the same 5 seconds at 720p

    Kling V3 Turbo at 720p costs 36 credits for 5 seconds; Seedance 2 at 720p costs 82. Run both on an identical prompt and judge the output, not the marketing.

  4. 4.Decide about 4K on price per second

    If the deliverable is genuinely 4K, Kling 3.0's 4K mode at 26.8 credits/sec is the cheaper route. Seedance 2's 4K tier is roughly three times that rate.

  5. 5.Pick the right variant for photo animation

    For image-to-video, Kling V2.6 (5s = 22, 10s = 44) and Kling V2.5 Turbo (5s = 40, 10s = 80) are image-only; Seedance 1.5 Pro handles images on the image-to-video tab at the same per-second rates as text.

Frequently asked questions

Which generates longer videos, Kling or Seedance?

Seedance. Seedance 2.5 runs 4 to 30 seconds in one job — every second up to 16, then in two-second steps to 30. Kling V3 Turbo and Kling 3.0 both max out at 15 seconds, and the older Kling V2.5 Turbo and V2.6 are fixed at 5 or 10 seconds.

Which is cheaper per second?

Seedance, at the low end. Seedance 1.5 Pro at 480p is 0.75 credits per second and Seedance 2 Mini is currently on a limited-time 1.6 credits/sec rate at 480p. Kling's cheapest option is Kling 3.0 standard at 5.6 credits per second. At 720p the gap narrows and flips depending on the variant: Kling V3 Turbo is 7.2 credits/sec versus about 16.4 for Seedance 2.

Which one is better for 4K?

On cost, Kling 3.0 — its 4K mode is 26.8 credits per second, against roughly 83 credits per second for Seedance 2 at 4K (414 credits for 5 seconds). Seedance 2 is the only Seedance variant with a 4K tier; Seedance 2.5, Fast and Mini top out at 720p.

Do both support audio?

Yes, differently. Kling 3.0 and Kling V2.6 have a sound toggle that increases the rate — Kling 3.0 standard from 5.6 to 8.0 credits per second. Seedance 1.5 Pro doubles its per-second rate with audio on, and the Seedance 2 family sends audio generation on by default.

Which supports the widest aspect ratios?

Seedance. Seedance 1.5 Pro and Seedance 2 both offer 21:9 alongside 16:9, 9:16, 1:1, 4:3 and 3:4. Kling V3 Turbo text-to-video and Kling 3.0 are limited to 1:1, 9:16 and 16:9, and Kling's image-to-video variants take their aspect from the source image.

Where do I find each on VdoBloom?

Kling V3 Turbo and Kling 3.0 are in the text-to-video and image-to-video model pickers. Seedance 1.5 Pro is there too. Seedance 2, 2.5, Fast and Mini sit on the separate Seedance Effects tab, because they run through a different pipeline.

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Ready to try it?

Compare Kling and Seedance yourself