Kling 3 or Veo 3.1: which makes the better video
Both reach 4K with synchronised audio, so the decision falls to two other things: Kling generates 15 seconds in one pass against Veo's 8, and Kling accepts seven reference inputs against Veo's three. For long shots and character control, Kling. For anything that plugs into the rest of Google's tooling, Veo.
Specifications where both sides have a verified number
| Kling VIDEO 3.0 | Veo 3.1 | |
|---|---|---|
| Input | text, image, video, audio | text, image |
| Output | video, audio | video, audio |
| Available on | Web, iOS, Android, macOS, Windows, API | Gemini API, Runway API |
| Longest clip in one pass | 15 seconds | 8 seconds |
| Resolution ceiling | 4K | 4K |
| Vertical resolution | 2,160 lines of vertical resolution | 2,160 lines of vertical resolution |
| Native audio | yes | yes |
| Reference inputs | 7 reference inputs | 3 reference inputs |
A row where one side has no verified number is left out entirely, because readers read a half-empty row in favour of the filled side.
Shot length, which matters more than resolution
Both go to 4K, so the resolution column decides nothing. What decides it is how much video comes out of a single pass: 15 seconds on Kling, 8 on Veo. Under ten seconds means any ordinary shot has to be built in pieces and joined, and the join between two generated pieces is exactly where the character and the lighting drift.
Reference inputs, where the gap is wider
Kling takes up to 7 reference inputs, Veo up to 3. Each reference is one more constraint on a face, an outfit, a location or a style. If you need one character to hold across several shots, that number translates directly into how much you redo.
One fact that catches both
Neither lists Persian among its speech languages. Kling, the only one of the two that publishes the list at all, names five: Chinese, English, Japanese, Korean and Spanish. Persian video with either of these means a separate voice pass.
Pick this if Kling VIDEO 3.0
- Your shot runs past eight seconds and you do not want a seam in the middle.
- You have a character or product that has to stay identical across several shots.
- You want to work without an API: Kling has web, mobile and desktop apps.
Pick this if Veo 3.1
- You are calling it from the Gemini API or the rest of Google's tooling.
- You want to know the per-second cost up front: Google publishes Veo's rate and Kuaishou does not publish Kling's.
- Eight seconds covers your shot and 4K matters to you more than length does.
Questions people actually ask
Which one works from Iran
Neither has an official route. Google publishes a supported-countries list and Iran is not on it; Kuaishou publishes no such list for Kling, so we record its status as unchecked rather than open.
Which is more expensive
Not comparable, because Kuaishou does not publish a dollar rate per second for Kling. Veo 3.1 is priced on the Google API, and the standard version is $0.40 per second at 720p and 1080p and $0.60 per second at 4K.