CheaperGen
KuaishouAPI pricing

Kling 4.0 API Pricing

Kling 4.0 costs $0.1486–$0.2226 per second of generated video, depending on resolution. That's up to 5% below Kuaishou's official list price. No subscription needed; failed generations are free.

Per second from
$0.1486
720p
5 s at 720p
$0.75
official $0.79
1 minute at 720p
$8.92
official $9.42
Below official
up to 5%
Create with Kling 4.0Get API keyAPI docs

Try it

Try Kling 4.0 — see the price before you run

Runs on your balance at the price on the button; failed runs are refunded. Results are saved to your account.

Open the full-screen Studio

Price list

Kling 4.0 price per second

Every tier with Kuaishou's official list price, our price and what common clip lengths cost.

Kling 4.0 pricing for every tier
TierOfficialCheaperGenSave5 s clip30 s clip5 s clips / $10
720p
audio included
$0.157/s$0.1486/s−5%$0.75$4.4613
1080p
audio included
$0.235/s$0.2226/s−5%$1.12$6.688
  • Official price: Kling developer API list price for Kling 4.0, kling.ai/dev/pricing (1 unit = $0.157 / s at 720p, 1.5 units = $0.235 / s at 1080p; with input video $0.094 / $0.141 per second of output plus the longer of the output and the input video; audio always on). Verified October 18, 2026.
  • Audio is always generated and included in the price.
  • With a reference video, the output seconds plus the longer of the output and the reference videos are billed at a lower per-second rate.

Reference-to-video

Pricing with a reference video

When you pass reference videos, their seconds are billed together with the output. Example: a 5-second reference and 5 seconds of output, priced per billed second.

Kling 4.0 price per billed second with reference video
TierOfficialCheaperGen5 s + 5 s request
720p$0.094/s$0.0891/s$0.90
1080p$0.141/s$0.1336/s$1.34

By task

Kling 4.0 pricing by endpoint

Each Kling 4.0 endpoint is billed on the same per-second rates. Starting price per endpoint:

Kling 4.0 Text to Videoup to −5%
$0.1486/s · 720p

Input: A prompt · kuaishou/kling-4.0/text-to-video

Kling 4.0 Image to Videoup to −5%
$0.1486/s · 720p

Input: A first frame (+ prompt) · kuaishou/kling-4.0/image-to-video

Kling 4.0 Reference to Videoup to −5%
$0.1486/s · 720p

Input: Reference media (+ prompt) · kuaishou/kling-4.0/reference-to-video

Cost examples

What Kling 4.0 videos cost

Worked examples at today's prices, against the official list price.

Kling 4.0 cost examples
Use caseRequestTierOfficialCheaperGenSaved
Test clip1 × 3 s720p$0.47$0.45$0.025
Social clip1 × 5 s720p$0.79$0.75$0.042
Longest single clip1 × 30 s1080p$7.05$6.68$0.37
Prototype batch50 × 5 s720p$39.25$37.15$2.10
Monthly production1,000 × 5 s720p$785.00$742.90$42.10

Estimate your monthly Kling 4.0 bill

Pick a tier and your monthly volume. Switch models to compare — same live prices as the tables above.

Model
Resolution

Drag the slider — or pick a model — to try your own numbers.

Kling 4.0 at 720p: 1,000 minutes of video per month costs $9,420 at the official list price and $8,915 on CheaperGen — you save $505 a month.

Billing

How Kling 4.0 billing works

The same rules apply in the API, the Playground and the Studio. Full details in the billing docs.

  • Unit. Per second of video, for any length in 3–30 s. Audio is always generated and included in the price.
  • Audio. No separate audio option.
  • Official reference. Kling developer API list price for Kling 4.0, kling.ai/dev/pricing (1 unit = $0.157 / s at 720p, 1.5 units = $0.235 / s at 1080p; with input video $0.094 / $0.141 per second of output plus the longer of the output and the input video; audio always on), verified October 18, 2026.
  • Hold, then settle. The quoted price is held from your prepaid balance when you submit and becomes the final charge on success. The exact cost is returned with every generation.
  • Failed = free. Failed generations, and jobs you cancel while queued, are refunded in full automatically.
  • Price before you run. POST /v1/quote/kuaishou/kling-4.0/text-to-video returns the price, the official price and your discount for any input — free.

FAQ

Kling 4.0 API Pricing questions

Kling 4.0 costs from $0.1486/s at 720p to $0.2226/s at 1080p, billed per second of generated video. The official list price is $0.157/s to $0.235/s (Kling developer API list price for Kling 4.0, kling.ai/dev/pricing).

A 5-second clip costs $0.75 at 720p and $1.12 at 1080p. You can pick any length in 3–30 s and pay per second.

Per second of video, from prepaid credits in US dollars. Audio is always generated and included in the price. With a reference video, the output seconds plus the longer of the output and the reference videos are billed at a lower per-second rate. The exact cost is shown on the Generate button in the Studio and returned with every API generation.

Kling 4.0 has no separate audio option; the price per second is the same for every clip at a given resolution.

No. The quoted price is held when you submit and refunded in full, automatically, if the generation fails or you cancel it before it starts.

See Kling 4.0 API cost for finished pieces, monthly budgets and what drives the bill, and price per second for the rate at every resolution.

No subscription is needed: CheaperGen is prepaid — add credits, spend them on any model in the API or the Studio, and failed generations are refunded automatically. Optional monthly plans add credits every month, and Pro and Max also lower prices. The quote endpoint (POST /v1/quote/{endpoint}) is free, so you can price any request before you run it.

For AI agents and LLMs: llms.txt has this model's live prices, the price comparison and the API reference in Markdown.