Kling 4.0 API Pricing: Every Route, Compared
6 min read • October 25, 2026
Table of contents
- Introduction
- Official Kling 4.0 API pricing
- Kling 4.0 on a Kling AI subscription
- Kling 4.0 API pricing across resellers
- What the subscription figures assume
- Examples
- Questions
Introduction
Kling 4.0 costs the least through the useapi.net Kling API, on the Kling AI subscription you already have. On Premier, a 5-second 1080p video uses $0.68 of the plan’s monthly credits, or $0.137 a second (as of October 2026).
Kling’s own developer API doesn’t sell Kling 4.0 yet, and every reseller that does charges more per second, at 720p and at 1080p. The comparison table below has each route side by side.
useapi.net is a third-party API, not affiliated with Kling AI or Kuaishou Technology. Your videos spend your Kling AI subscription credits, and useapi.net adds no per-video charge. We read every price on this page live on October 25, 2026 and converted each one to the cost of the same video, so the routes compare like for like.
Official Kling 4.0 API pricing
Kling 4.0 is already on Kling’s developer API price list, marked “Coming Soon”: $0.14 a second at 720p and $0.21 at 1080p, so a 5-second 1080p video would cost $1.05.
You can’t buy it yet. The page says access “is not yet available”, its prepaid packs start at $700 and don’t cover Kling 4.0, and early access goes through a business inquiry (as of October 25, 2026).
Kling 4.0 on a Kling AI subscription
Through useapi.net, Kling 4.0 (kling-v4-0) runs on your Kling AI subscription’s credits, with 10% off on Pro, Premier and Ultra+ for a limited time. This is what one video costs on each plan, at the regular monthly price (as of October 2026):
| Kling 4.0 | Official API | Standard $8.80/m 660 cr/mo | Pro $32.56/m 3,000 cr/mo | Premier $80.96/m 8,000 cr/mo |
|---|---|---|---|---|
| 720p, 5 s | $0.70 $0.14 a second, not sold yet | $0.67 / 50 cr $0.133 a second, 13 videos/mo | $0.49 / 45 cr $0.098 a second, 66 videos/mo | $0.46 / 45 cr $0.091 a second, 177 videos/mo |
| 1080p, 5 s | $1.05 $0.21 a second, not sold yet | $1.00 / 75 cr $0.200 a second, 8 videos/mo | $0.73 / 67.5 cr $0.147 a second, 44 videos/mo | $0.68 / 67.5 cr $0.137 a second, 118 videos/mo |
| 1080p, 10 s | $2.10 not sold yet | $2.00 / 150 cr 4 videos/mo | $1.47 / 135 cr 22 videos/mo | $1.37 / 135 cr 59 videos/mo |
| 1080p, 30 s | $6.30 not sold yet | $6.00 / 450 cr 1 video/mo | $4.40 / 405 cr 7 videos/mo | $4.10 / 405 cr 19 videos/mo |
- The Official API column is Kling’s preview price, which can’t be bought yet.
- 1080p (
mode: pro) needs a paid Kling AI subscription, and Standard is the smallest paid one. - The Pro and Premier columns include Kling’s limited-time 10% off for Kling 4.0. Without it, Premier would be $0.101 a second at 720p and $0.152 at 1080p.
- Ultra+ ($544.99 a month for 57,000 credits) brings 1080p down to $0.129 a second and 720p to $0.086. Billed yearly, Premier ($728.64 a year) is $0.102 a second at 1080p and Ultra+ ($4,902.99 a year) is $0.097. The yearly figures assume you use the credits.
- The same credit price applies on all three Kling 4.0 endpoints: text-to-video, image-to-video with start, end and keyframe images, and Omni with reference images, elements and voices. Every video comes with a stereo soundtrack, from 3 to 30 seconds.
The cost calculator on the Kling API page prices Kling 4.0 and every other Kling model on each subscription, yearly billing included.
Kling 4.0 API pricing across resellers
Several API resellers already sell Kling 4.0 per second of output. Here is every rate we could verify, read from each vendor’s live page on October 25, 2026, with no video input:
| Route | 720p, per second | 1080p, per second | 1080p, 5 s | Notes |
|---|---|---|---|---|
| useapi.net, Kling Premier | $0.091 | $0.137 | $0.68 | 118 five-second 1080p videos a month on the $80.96 plan |
| useapi.net, Kling Pro | $0.098 | $0.147 | $0.73 | 44 five-second 1080p videos a month on the $32.56 plan |
| UnificAlly | $0.1134 | $0.1701 | $0.85 | 10% launch sale to October 29, about $0.126 and $0.189 after it |
| Kling preview price | $0.14 | $0.21 | $1.05 | not sold yet, prepaid packs from $700 |
| Kie.ai | $0.1425 | $0.2125 | $1.06 | about 10% less with the bonus credits on larger top-ups |
| fal.ai | $0.157 | $0.235 | $1.18 | the same rate for text-to-video and image-to-video |
| Runware | $0.157 | $0.235 | $1.18 | |
| WaveSpeedAI | $0.157 | $0.235 | $1.18 | a 25% promotion was showing on October 25 |
The “Kling 4.0 API price” quoted around the web, about $0.11 to $0.14 a second, is the 720p rate, and the lowest of those is a launch sale. When you compare, match the resolution and check for a promotion.
What the subscription figures assume
A subscription price per video holds when you use the plan’s credits. Premier’s 8,000 credits a month make 118 five-second 1080p videos or 19 thirty-second ones. For more volume, connect several Kling accounts to one useapi.net token and it spreads jobs across them (Run several Kling accounts), or buy Kling credit top-ups.
Kling also sets the price. The 10% Kling 4.0 discount is marked limited-time, so check the live plans page before you commit spend. Even without it, Premier’s $0.152 a second at 1080p stays below every 1080p reseller rate above.
To make your first Kling 4.0 video, the Kling 4.0 tutorial walks through one real run with curl, from the request to the downloaded MP4, plus 1080p, 30-second, 21:9 and keyframe variants.
Examples
Kling 4.0 » kling-v4-0, text-to-video, std 720p, 3 seconds, 16:9
This video took 27 credits off a Kling Pro subscription, $0.29 at Pro’s credit price, with its stereo soundtrack. The prompt and every response are in the Kling 4.0 tutorial.
Questions
How much does the Kling 4.0 API cost?
Through useapi.net, a 10-second 1080p Kling 4.0 video uses $1.37 of a Kling Premier subscription’s credits, against $2.10 at Kling’s own preview price, which can’t be bought yet, and $2.35 on fal.ai (as of October 2026). The price table shows every length on each plan.
What is the Kling 4.0 price per second?
Through useapi.net, Kling 4.0 costs $0.137 a second at 1080p and $0.091 at 720p on Kling Premier. That is lower than every reseller we checked, whose rates start at $0.1701 and $0.1134 (as of October 2026). The reseller table lists each one.
What does a 30-second Kling 4.0 video cost?
Through useapi.net, a 30-second 1080p Kling 4.0 video, the longest single generation, uses $4.10 of a Premier subscription’s credits or $4.40 on Pro, against $6.30 at Kling’s preview price and $7.05 on fal.ai (as of October 2026). Premier makes 19 of them a month.
Do I need a prepaid pack or a Kling API key?
Through useapi.net, no: you need a useapi.net API token and a Kling AI subscription from Standard at $8.80 a month, connected once through Setup Kling. Kling’s own developer API needs a separate developer account and a prepaid pack from $700, valid 180 days, which doesn’t cover Kling 4.0 yet (as of October 2026).
Prices in this article were read on October 25, 2026. Kling, the resellers and their promotions change often, so confirm the live rate before you scale. Connect your Kling account with Setup Kling, price any model on the Kling API page, and a useapi.net subscription runs Kling and every other API with one token, including the hosted Kling MCP server for Claude Code, Cursor and VS Code.
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