Kling vs Wan: Kling 3.0 and Wan 3.0 by API compared
Kling 3.0 makes 4–15 s clips with no references; Wan 3.0 makes 2–30 s clips and takes image, video and audio references. Inputs and price compared.
Kling vs Wan, by API, comes down first to clip length: Wan 3.0 makes a single clip anywhere from 2 to 30 seconds, while Kling 3.0 stops at 15 and starts at 4. Wan also takes image, video and audio references, which Kling does not. Kling bills per second with a higher rate when audio is on; Wan bills per second by resolution, with audio at no extra charge.
These are the limits of kling-3 and wan-3.0 on Sume's POST /v1/videos, from Video generation, Video Router and the model catalog and pricing code, read on 2026-09-28. Output quality is left to your own test prompts.
How do Kling 3.0 and Wan 3.0 differ?
Both take a text prompt or a first and last frame, so only the rows that differ are here; Kling 3.0 API and Wan 3.0 API hold the full limits. Other hosts set their own: Kling's own API lists Kling 3.0 at 3–15 seconds and 720P, 1080P or 4K (Kling capability map, read 2026-09-28).
| Item | Kling 3.0 (`kling-3`) | Wan 3.0 (`wan-3.0`) |
|---|---|---|
| Clip length | 4–15 s | 2–30 s |
| References | None | Image, video and audio |
| Aspect ratios | 16:9, 9:16, 1:1 | auto, adaptive, 16:9, 4:3, 1:1, 3:4, 9:16 |
| Price moves with | Audio: $0.14 silent, $0.21 with audio | Resolution: $0.0625 at 480p, $0.125 at 720p, $0.25 at 1080p |
Which one makes longer clips?
Wan 3.0, by double: wan-3.0 accepts 2–30 seconds and kling-3 4–15. The docs say every other catalog model they list, apart from seedance-2.5, tops out at 15. So a 20- or 30-second shot is one Wan generation, while on Kling it is two or more clips joined afterwards. At the short end, Wan's 2-second floor fits a quick cutaway that Kling's 4-second minimum overshoots.
What does the longest clip cost on each?
A 15-second Kling clip is its ceiling; Wan can match that length or double it. Kling's price follows audio, not size, and it bills the audio rate unless you send generate_audio: false; Wan's follows resolution only, and Wan 3.0 vs Seedance 2.5 explains why every Wan request should carry resolution. Amounts below are reserved on submit, plus a 5.5% agent fee by default.
| Clip | Reserved |
|---|---|
kling-3, 15 s silent | $2.10 |
kling-3, 15 s with audio | $3.15 |
wan-3.0, 15 s at 720p | $1.88 |
wan-3.0, 30 s at 720p | $3.75 |
wan-3.0, 15 s at 1080p | $3.75 |
wan-3.0, 30 s at 1080p | $7.50 |
Is Wan open source, and is that the Wan I get?
If your “Kling vs Wan” question is about downloading Wan weights and running them yourself, that is a different question: Sume serves Wan 3.0 as a hosted model id, wan-3.0, and documents no downloadable weights for it; its video catalog reports hugging_face_id: null for every model. If you need to run weights yourself, this API is not the route.
Which should I pick?
- Pick Wan 3.0 for a single clip over 15 seconds or under 4, for references, or for a 480p tier.
- Pick Kling 3.0 for a flat per-second price at any size and a lower silent rate.
- Compare Kling with Seedance in Kling 3.0 vs Seedance 2.0.
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Written by Sume