Seedance 2.0 vs Kling 3.0 vs Wan 2.6: Video API Pricing Compared (2026)

tableHead-to-Head: Specs and Pricing

Two things jump out of the table. First, the Seedance line is not one model but a ladder — mini for volume, 2.0 for resolution headroom up to 4K, 2.5 for long-form up to 30 seconds. Second, Kling 3.0 is the only entry where audio is generated natively and included in the per-second rate. Wan 2.6, meanwhile, quietly holds the value crown for clean 1080p at $0.24/sec.

layersSeedance 2.0 Family: The Ladder

ByteDance's Seedance models are the most versatile of the three, and the naming maps directly to budget decisions:

seedance2.0-mini — the volume play

At $0.08/sec for 480p it is the cheapest video generation we sell, full stop. A 5-second clip costs $0.40. It exists for batch work — thumbnails, prompt sweeps, social variants — and we gave it a dedicated breakdown in The Cheapest AI Video API in 2026.

seedance2.0 — the resolution play

The only model in this comparison with a true 4K tier. The jump from 720p ($0.47) to 4K ($2.40) is steep, so the sane workflow is to lock composition at 480p/720p and render finals at 1080p or 4K only for shots that will actually be seen on large screens.

seedance2.5 — the duration play

Up to 30 seconds in a single generation at 480p ($0.32) or 720p ($0.68). If your use case is b-roll, background loops or anything that punishes a 15-second cut, 2.5 removes the stitching step entirely.

graphic_eqKling 3.0: The Audio Play

Kling 3.0 Pro bills at a flat $0.27/sec for any length between 3 and 15 seconds, and that rate includes native audio — dialogue, ambient sound and effects rendered in the same diffusion pass as the picture, lip-synced where speech is involved. Every other model in this comparison outputs silent video, which means a separate TTS or sound-design step (Viddra's speech-02-hd at $0.18 per thousand characters covers the voiceover side if you go that route).

For talking-head style content, product explainers and anything with dialogue, Kling 3.0 collapses a two-stage pipeline into one call. Our Kling 3.0 integration guide walks through the audio prompting patterns that work best.

savingsWan 2.6: The 1080p Value Play

Wan 2.6 keeps the simplest pricing card in the deck: $0.16/sec at 720p, $0.24/sec at 1080p, in fixed 5, 10 or 15 second lengths. No audio, no 4K — but at 1080p it undercuts seedance2.0's $1.05/sec by more than 4x and Kling 3.0 by a modest margin, while holding up well on motion coherence. If your deliverable is 1080p web video without sound, Wan 2.6 should be your default and you should have a specific reason every time you reach for something pricier.

calculateCost per Clip: The Number That Matters

Per-second rates hide the real question — what does a finished clip cost? Normalizing to a 10-second 720p video where possible:

The spread is dramatic: the same 10 seconds of 720p footage costs between $1.50 and $4.70 depending on which model id you send. That is the entire argument for routing through an aggregator — the choice becomes a config value, not a contract negotiation.

routeWhich One Should You Pick?

Tightest budget / maximum volume → seedance2.0-mini ($0.08/sec). Prototype everything here first.

Long-form over 15 seconds → seedance2.5, up to 30s per generation.

Native audio, dialogue, lip-sync → kling3.0 (audio included) or veo3 ($0.60/sec with audio) if you prefer Google's physics.

True 4K delivery → seedance2.0 is the only option; budget $2.40/sec for finals.

Silent 1080p web video at scale → wan2.6 at $0.24/sec, the quiet value pick.

You can test all three families against your own prompts right now in the Playground — same prompts, side by side, before spending anything on API calls.

codeSwitching Models Is a One-Line Change

Because every model shares the same request shape on Viddra, a model A/B test is literally a config diff:

import os, requests

BASE = "https://api.viddra.com/v1"
HEADERS = {"Authorization": f"Bearer {os.environ['VIDDRA_API_KEY']}"}
PROMPT = "A paper boat floats down a rain gutter, cinematic close-up"

for model in ["seedance2.0-mini", "wan2.6", "kling3.0"]:
    r = requests.post(f"{BASE}/video/generations", headers=HEADERS, json={
        "model": model,
        "prompt": PROMPT,
        "duration": 5,
        "aspect_ratio": "16:9",
    }, timeout=30)
    print(model, r.json()["task_id"])
# poll GET /video/generations/{task_id} for each — same schema for all models

helpFAQ

Which is cheaper, Seedance or Kling?

On a per-second basis Seedance is cheaper at every comparable tier — seedance2.0-mini starts at $0.08/sec versus Kling 3.0's flat $0.27/sec. But Kling's rate includes native audio; if your alternative is Seedance plus a separate voiceover and sound-design pass, the total cost gap narrows or disappears.

Which video API supports 4K output?

Of the three families compared here, only seedance2.0 offers a true 4K tier, at $2.40/sec. For most web and social deliverables, 1080p from wan2.6 ($0.24/sec) or seedance2.0 ($1.05/sec) is the more economical choice.

Can I switch between Seedance, Kling and Wan without code changes?

Yes on Viddra — all models share one endpoint and one request schema; you change only the model id. On separate native SDKs, no — each provider has its own auth, async pattern and payload format.

What video length can each model generate?

Kling 3.0 generates 3–15 seconds, Wan 2.6 fixed 5/10/15-second clips, seedance2.0 and seedance2.0-mini 4–15 seconds, and seedance2.5 leads at 4–30 seconds per generation.

flagThe Verdict

There is no single winner — there is a right model per job. Prototype on seedance2.0-mini, ship silent 1080p on wan2.6, ship audio on kling3.0, go long on seedance2.5, go 4K on seedance2.0. The expensive mistake is not picking the "wrong" model; it is hard-wiring one SDK so you cannot switch when the job changes. One key, eighteen models, per-second billing: that is the setup that keeps the choice cheap. Browse the full roster on the models page or grab a key in the console.