Kling AI Pricing: What a Usable Second of Video Actually Costs

Kling AI has four paid plans. After a discounted first month they renew at $8.80, $32.56, $80.96 and $159.99 a month (Standard, Pro, Premier and Ultra), for 660, 3,000, 8,000 and 26,000 credits. Kling 3.0 at 1080p with sound costs 12 credits a second, so a five-second clip is 60 credits and Standard buys eleven of them.

You can also skip the plan and pay per second through the API, at $0.168 for the same model. That makes a Kling credit worth 1.4 cents, and it turns the plan question into arithmetic: a plan only pays off if you spend enough of its credits, rerolls included, before they expire. At 1080p with sound, that means generating about 39 clips a month before Pro beats paying per second.

A Kling credit is worth 1.4 cents

In the app, Kling 3.0 at 1080p with sound costs 12 credits a second. Through Kling's API it costs 1.2 units a second at $0.14 a unit, so $0.168, and fal and Runware charge exactly the same. Every mode lines up the same way (720p with sound is 9 credits or 0.9 units, silent 1080p is 8 or 0.8), so ten credits always buy what one API unit buys.

That gives you a yardstick for every plan. Here's what each one works out to at its renewal price if you use every credit:

Clips and per-second prices are for Kling 3.0 at 1080p with sound. One trap: the plan page quotes the price per 100 credits at the first-month discount ($1.06 on Standard). From the second month on, every credit costs about a quarter more.

Kling AI pricing depends on how much of your plan you use

Monthly credits expire 31 days after they land. A yearly plan doesn't change that: you get the same monthly drop for less money, and whatever you don't spend that month is gone. When a subscription ends, the leftovers go too. So a plan's real price per credit is what you paid divided by the credits you actually spent, and below a certain level of use it climbs past the API's 1.4 cents.

Standard barely beats the API even when you spend every credit, so it's really a ticket to the app (no watermark, 1080p, commercial use) at roughly API prices. Paying yearly lowers every bar, but it bets twelve months of steady use.

Every reroll is part of the price

Credits buy generated seconds, and you only want the usable ones. So the number worth tracking is cost per usable second: what you paid divided by the seconds you actually use. Keep everything and Kling 3.0 costs $0.168 a second. Keep half and it's $0.336. Keep a third and it's about fifty cents.

Take a real clip. I generated five seconds of Kling 3.0 Turbo through Runware, 1080p with sound, for $0.70, asking for a slow push-in on a perfume bottle standing on wet slate. The first two and a half seconds are a clean product shot. Then it cuts to a close-up on a different surface, which I couldn't use in a shot that's meant to be one continuous move. That's 2.5 usable seconds for $0.70, or $0.28 each, twice the sticker price.

One clip can't give you a keep rate, and yours depends on what you make. I'd guess a still product shot fails less often than hands or a character speaking a line. So measure your own: for a week, note the seconds you generate and the seconds that make it into an edit, and divide. What the clip does show is that a generation can fail partway, and you pay for the seconds you trim the same as for the ones you keep. That cut is also one of the few tells that still gives AI video away, which I come back to in the AI video detector post.

Rerolls push you toward a plan, expiring credits push you back

On the API, every reroll is billed. On a plan, a reroll spends credits that would have expired anyway, so it's free until you run out. Say you need 15 usable clips a month. If they come out right the first time, that's 15 clips and $12.60 through the API, and no plan beats it. If each one takes three tries, you're generating 45 clips: $37.80 on the API, while Pro covers 50 of them for $32.56.

So count the clips you generate, rerolls included, not the ones you keep. At 1080p with sound, the API is cheapest until about 39 clips a month. Pro wins from there to roughly 100, Premier to roughly 220, and Ultra beyond that, counting top-up packs once a plan runs dry. Standard only wins if you make exactly its eleven clips. Try your own month:

Is Kling AI free?

Partly. Without a subscription you can claim free credits when you log in each month, and they last 31 days. Kling doesn't print the amount on its plan page, so check your balance after logging in; a five-second clip at 720p with sound takes 45 credits. Free videos stay at 720p, carry a watermark and aren't for commercial use.

Buying credit packs doesn't lift those limits, because watermark removal and 1080p come with a subscription, not with credits. Packs start at $5 for 330 credits, last two years and cost 1.25 to 1.52 cents a credit, about the API rate. They're top-ups for subscribers.

The Kling API costs the same everywhere, but the minimums differ

Kling's own API wants prepaid packages: a 100-unit trial for $14 ($9.80 the first time) that expires in 30 days, then $700 and up. fal and Runware charge the same per-second price with no minimum, which makes them the practical API for anyone not spending $700. My clip came back without a watermark. If you want sound for less, Kling 3.0 Turbo costs $0.14 a second at 1080p instead of $0.168.

What about Kling 4.0?

As of mid-October 2026, only Kling 4.0 Flash is out, in early access for Ultra subscribers on a yearly plan. It has no public credit price, Kling's API packages don't cover it, and fal and Runware don't offer it yet. Kling has said the full model, with clips up to 30 seconds and 4K, launches in October. When it does, the method carries over: multiply its credits per second by 1.4 cents and compare that with what the API charges for it.

Every Kling plan is a bet that you'll spend enough credits, rerolls and all, to beat 1.4 cents each before they expire. Buy Pro and make a dozen clips a month, and you've paid more than three times the API price for the same model.