Comparing video models on a per-second rate is how people end up surprised by an invoice. The rate is quoted per generated second at one resolution, with or without audio — and almost nobody quotes the same configuration. This post puts them in one unit: dollars per minute of output.
| Model | Resolution | Per second | 1 minute | 8 seconds |
|---|---|---|---|---|
| Kling 2.6 | 720p | $0.042 | $2.52 | $0.34 |
| Wan 3 | 480p | $0.050 | $3.00 | $0.40 |
| Runway Gen-4 Turbo | — | $0.050 | $3.00 | $0.40 |
| Kling 3.0 | 720p | $0.084 | $5.04 | $0.67 |
| Hailuo 3 | 768p | $0.100 | $6.00 | $0.80 |
| Kling 3.0 | 1080p | $0.112 | $6.72 | $0.90 |
| Runway Gen-4.5 | — | $0.120 | $7.20 | $0.96 |
| Kling 3.0 + native audio | 1080p | $0.168 | $10.08 | $1.34 |
| Veo 3.1 | no audio | $0.200 | $12.00 | $1.60 |
| Seedance 2.5 | 720p | $0.300 | $18.00 | $2.40 |
| Veo 3.1 | with audio | $0.400 | $24.00 | $3.20 |
| Kling 3.0 | 4K | $0.420 | $25.20 | $3.36 |
| Seedance 2.5 | 1080p | $0.680 | $40.80 | $5.44 |
Kling 3.0 costs $0.112/s at 1080p and $0.42/s at 4K — a 3.75x step for a 4x pixel count. If a shot only ships at 1080p, generating at 4K “to be safe” is the most expensive habit in the table.
Same model, same resolution: Kling 3.0 is $0.112/s silent and $0.168/s with native audio. Whether that beats generating silent video and adding sound in post depends on your editing pipeline — but it is not a rounding error, and it rarely appears in comparison tables.
Every number above is a first take. For shots with people, hands or text, a 1-in-2 hit rate is normal. That means 300 finished clips at 8 seconds is 4,800 generated seconds: about $202 a month on Kling 2.6 720p, $538 on Kling 3.0 1080p, and roughly $3,264 on Seedance 2.5 1080p. The model, not the volume, is what moves the invoice.
CogVideoX-Flash is free to call on NovAI — up to 5 video generations a day on the free tier, no card. It is not a Seedance-class model, but it is enough to wire up the request, queue and download path before you spend anything.
curl https://aiapi-pro.com/v1/video/generations \
-H "Authorization: Bearer $NOVAI_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"cogvideox-flash","prompt":"a paper boat in the rain, close up"}'
Per minute, Veo 3.1 with audio is about $24 and Seedance 2.5 at 1080p is about $40.80 — so it depends on resolution and audio. Seedance 2.5 at 720p is about $18/min, cheaper than Veo 3.1 with audio.
Because the audio is generated in the same pass as the video, so the provider bills the same per-second rate at a higher tier. Kling 3.0: $0.112/s at 1080p silent, $0.168/s with audio.
Assume a 1-in-2 hit rate for shots with people, hands or text. That doubles every per-minute number here. A 300-clip month at 8 seconds becomes 4,800 generated seconds.
API list prices from each provider's rate card, or from the reseller's published API price where the provider does not sell directly. Consumer subscriptions are priced differently and are usually cheaper per clip inside a plan.
111 live models, provider list price, 0% platform markup. $2 credit on signup, no card required.
Get an API keyPrices reflect provider rate cards as of 2026-10-30 and are published machine-readably at /china-ai-leaderboard.json. Reseller-sourced rows are labelled in the source page linked above.