Kling 3.0 — Kuaishou's latest video generation model — runs on HiAPI with straight per-second billing, not a subscription. As of October 2026, the live rate pulled from HiAPI's pricing endpoint is $0.13/s at 720p and $0.16/s at 1080p for Kling 3.0 Turbo, and $0.10–$0.479/s across five tiers for Kling 3.0 Omni depending on resolution and whether you turn on native audio. There's no seat fee, no minimum spend, and no plan to pick — you're billed only for clips that actually finish.
This guide breaks down exactly what each Kling 3.0 tier costs through HiAPI, how that billing model differs structurally from calling Kling through its own developer platform, and how to keep spend predictable once you're generating at volume.
How HiAPI Bills Kling 3.0
Kling 3.0 runs through HiAPI's async task endpoint like every other video model on the platform: you submit a generation request, HiAPI hands back a task id, you poll until it finishes, and you're charged only once the task completes successfully. Failed or errored tasks aren't billed.
HiAPI actually hosts two separate Kling 3.0 lines, and they're priced differently:
Kling 3.0 Turbo (text-to-video and image-to-video) — the fast, flat-rate tier:
| Resolution | Price per second |
|---|---|
| 720p | $0.13 |
| 1080p | $0.16 |
Kling 3.0 Omni (text-to-video and image-to-video) — the higher-end tier with native synced audio and up to 4K output:
| Tier | Price per second |
|---|---|
| 720p | $0.10 |
| 720p + audio | $0.129 |
| 1080p | $0.129 |
| 1080p + audio | $0.1645 |
| 4K | $0.479 |
Both lines bill the same way whether you're generating from a text prompt or driving the clip from a reference image — the price depends on resolution (and audio, for Omni), not on which endpoint you call. Turbo supports flexible 3–15 second clips; a 5-second 720p Turbo clip runs $0.65, a 10-second 1080p clip runs $1.60. Omni's per-second math works the same way once you pick a resolution/audio tier.
These are live figures as of October 2026 — rates can move, so if you're sizing a large run, re-check the current numbers on HiAPI's pricing page rather than budgeting off this table from memory. If you haven't made your first Kling 3.0 Turbo call yet, the getting-started guide covers the request/poll/download flow in curl and Python; this piece stays focused on cost.
Kling 3.0 via HiAPI vs. Calling Kling Directly
Structurally, the two paths look quite different. Through HiAPI, Kling 3.0 sits behind the same API key and the same pay-per-call billing as every other model on the platform — no separate account, no package to buy before you can send your first request.
Calling Kling directly means going through Kuaishou's own developer platform, which is a separate system from HiAPI entirely: a distinct login, a distinct dashboard, and (based on third-party reporting on that platform, not confirmed against a live primary source at the time of writing) a prepaid resource-package model rather than per-call billing — you buy a block of usage units upfront instead of paying as requests complete.
We checked Kling's own developer pricing page directly while writing this piece and it's a JavaScript-rendered page that didn't return readable pricing data to our tooling, and the specific per-second figures attributed to it vary across the secondary sources that do cite it. Rather than publish a number we couldn't independently confirm live, we're leaving the direct-comparison dollar figure out of this piece — per our own standard, an unverified price is worse than no price. If you need Kling's current direct-API rate for a specific tier, check Kuaishou's developer platform at the time you're budgeting, since neither side's pricing is fixed.
What we can say with confidence is the structural tradeoff: HiAPI's single key and transparent per-second pricing page means no package purchase, no second dashboard, and no unused prepaid balance sitting idle if your usage is spiky. If your workflow already mixes Kling 3.0 with other video or image models, see how Omni's native-audio 4K tier stacks up against Kling 3.0 Omni's dedicated writeup for the capability side of that tradeoff — you're not managing a second vendor account to try it.
Estimating Your Cost at Scale
The math is simple because pricing is flat per resolution tier — multiply the per-second price by clip length, then by volume:
- 100 Turbo clips, 5s each at 720p → 100 × 5 × $0.13 = $65
- 100 Turbo clips, 10s each at 1080p → 100 × 10 × $0.16 = $160
- 1,000 Omni clips/month, 5s each at 720p with audio → 1,000 × 5 × $0.129 = $645/month
- 1,000 Omni clips/month, 5s each at 1080p, no audio → 1,000 × 5 × $0.129 = $645/month
A few levers worth pulling deliberately before a large batch job, rather than defaulting to the top tier:
- Resolution is the biggest lever on Turbo. 1080p costs 23% more per second than 720p for identical output length — fine for a hero clip, wasteful for a test render.
- Audio on Omni isn't free. Turning on native sound adds roughly 29% at 720p and 28% at 1080p per second. Skip it for silent b-roll or clips you'll score separately.
- Clip length compounds cost linearly — a 15-second Turbo clip costs 3x a 5-second one at the same resolution. Trim to the shortest clip that still tells the shot, especially while iterating on a prompt.
- Iterate on Turbo, finalize on Omni. Turbo's flat $0.13–$0.16/s makes it suitable for testing prompts and camera moves, while Omni is cheaper at 720p even with audio; reserve Omni's 4K/audio tiers for the clips you've already locked.
- Re-check pricing before committing a budget, especially for runs over a few hundred clips — these are live figures that can change, and the pricing page is the source of truth, not a number from a prior planning doc.
FAQ
Is there a subscription or monthly plan for Kling 3.0 on HiAPI? No. It's pay-per-second, billed only on successfully completed clips. There's no seat fee, package purchase, or minimum commitment.
What's the actual difference between Kling 3.0 Turbo and Omni pricing? Turbo is a flat $0.13/s (720p) or $0.16/s (1080p), no audio tier. Omni starts cheaper at $0.10/s (720p, silent) but scales up to $0.479/s at 4K, with audio adding roughly 28–29% at a given resolution.
Does clip length or prompt complexity change the per-second rate? No — the rate is fixed per resolution/audio tier regardless of prompt length. Total cost scales linearly with clip duration (seconds × rate), not with how detailed the prompt is.
Can I use the same API key for Kling 3.0 and other video or image models? Yes. HiAPI uses one key and one bill across its full model catalog — see the docs for pointing an existing integration at Kling 3.0's task endpoints.
Takeaways
- Kling 3.0 on HiAPI bills per second, per successfully completed clip — no subscription, no package purchase, no minimum spend.
- As of October 2026, live pricing is $0.13/s (720p) and $0.16/s (1080p) for Turbo, and $0.10–$0.479/s across five resolution/audio tiers for Omni; re-verify on the pricing page before budgeting a large run.
- Calling Kling directly runs through a separate developer platform with its own login and (per third-party reporting) prepaid usage packages rather than per-call billing — we couldn't independently confirm a live per-second figure for that path at the time of writing, so we left the dollar comparison out rather than guess.
- Resolution and audio are the two biggest cost levers. Default to Turbo for iteration and silent Omni tiers where sound isn't needed; reserve 4K and audio for clips you've already locked.
Ready to generate? Check the Kling 3.0 Turbo or Kling 3.0 Omni model pages for live endpoint details, or head to the docs to start generating with your existing HiAPI key.
