Kling 3 API access starts at $0.075 per second through third-party providers and roughly $0.10–$0.40 per second on the official platform — but the real cost depends on your resolution, audio needs, and how many retakes your workflow requires.
What Kling 3 API Actually Offers
Kling 3.0 from Kuaishou launched in February 2026 and currently holds the #1 position on the Artificial Analysis video leaderboard. (For a full breakdown of how it stacks up against Seedance 2, Sora 2, and Veo 3.1, see our 2026 AI video generation comparison.) For API users, three model lines matter:
Kling V3 is the standard model. It generates text-to-video and image-to-video at up to 4K resolution and 60fps. For most production workflows, this is where you start.
Kling O3 (Omni) adds native audio — lip-synced dialogue, ambient sound, and music generated alongside the video. It costs roughly 2.5× more per second than V3, and generation takes 2–3× longer. Worth it when you need synchronized audio without post-production.
All models support both text-to-video and image-to-video. The image-to-video route often produces better results per dollar because you control the starting frame, which reduces retakes.
Official API Pricing Breakdown
Kuaishou's official API uses a credit-based system billed per second of generated video. Here's what each model costs (source: Kling AI developer pricing, verified June 2026):
Model | Resolution | Credits/sec | ~USD/sec |
|---|---|---|---|
V3 Standard | 720p | 5 | ~$0.10 |
V3 Pro | 1080p | 8 | ~$0.16 |
O3 Standard | 720p (+ audio) | 12 | ~$0.24 |
O3 Pro | 1080p (+ audio) | 20 | ~$0.40 |
Credits are purchased in prepaid packages:
Package | Price | Credits | Effective $/credit |
|---|---|---|---|
Trial | $9.80 | ~500 | $0.020 |
Starter | $98 | ~5,000 | $0.020 |
Standard | $980 | ~50,000 | $0.020 |
Enterprise | $4,200 | ~300,000 | $0.014 |
One thing the pricing page won't tell you: failed API tasks don't consume credits. This is a meaningful difference from the consumer web UI, where failed generations still deduct your balance. For developers iterating on prompts, this makes the API more economical than it looks.
The catch? The smallest package is $9.80, but serious API work burns through that in a few test runs. And credits expire — the trial pack lasts 30 days, while larger packages get 90 days.
Third-Party API Pricing Compared
Several third-party platforms resell Kling 3 API access at per-second rates with no prepaid commitment. Here's how they compare (rates verified June 2026 — check provider pages for current pricing):
Provider | 720p no-audio | 1080p no-audio | 1080p + audio | 4K | Payment |
|---|---|---|---|---|---|
AIReiter | $0.095 | $0.127 | $0.191 | $0.477 | Pay-as-you-go |
EvoLink | $0.075 | $0.106 | ~$0.112 | N/A | Prepaid credits |
~$0.08 | ~$0.12 | ~$0.15 | N/A | Pay-as-you-go | |
PiAPI | $0.08 | $0.12 | ~$0.15 | N/A | Pay-as-you-go |
Official API | ~$0.10 | ~$0.16 | ~$0.40 | ~$0.48 | $9.80+ prepaid |
EvoLink has the lowest 720p rate. AIReiter is the only third-party option in this table that supports 4K generation and native audio — most cap at 1080p.
One pricing detail worth noting on AIReiter: 4K with audio costs the same as 4K without ($0.4767/sec for both). At lower resolutions, adding audio increases the rate by ~50% (e.g., 1080p jumps from $0.127 to $0.191). If you're already generating 4K content, audio comes at no extra cost.
Most third-party providers use pay-as-you-go billing with no expiring credits. EvoLink is the exception — it uses prepaid credit packs, though still without expiry.
Real Cost Per Video — What You'll Actually Spend
Per-second pricing only tells part of the story. Here's what real production workflows cost, including retakes:
Quick test clip (5 sec, 720p, no audio) via AIReiter:
Single generation: $0.475
With 2 retakes (typical): ~$1.43
Production clip (10 sec, 1080p, no audio) via AIReiter:
Single generation: $1.27
With 3 retakes: ~$5.09
Full audio clip (10 sec, 1080p, with audio) via AIReiter:
Single generation: $1.91
With 3 retakes: ~$7.64
4K cinematic clip (10 sec, 4K, with audio) via AIReiter:
Single generation: $4.77
With 3 retakes: ~$19.07
Budget formula for production planning:
Total cost = (clips needed) × (avg seconds) × ($/sec) × (1 + retake rate)
Community estimates on r/aivideo put real-world production costs at roughly $50 per finished minute when accounting for iterations, failed generations, and prompt refinement. That aligns with our math: 60 seconds of 1080p content at $0.127/sec via AIReiter × 3 retakes per clip ≈ $22.86 in generation costs alone, plus test generations and prompt experiments.
Start with 5-second 720p clips during prompt development, then scale up to your target resolution for final output.
Official vs Third-Party — Which Should You Choose?
Factor | Official API | Third-Party (AIReiter, etc.) |
|---|---|---|
Price per second | Higher (~$0.10–$0.40) | Lower (~$0.075–$0.13) |
Minimum commitment | $9.80 prepaid package | Pay-as-you-go |
Model freshness | Day-zero updates | Days to weeks lag |
Credit expiry | 30–90 days | No expiry (pay per use) |
Failed generation billing | Not charged | Not charged |
O3 audio support | Full | Varies by provider |
Support | Direct from Kuaishou | Provider-dependent |
Choose the official API if:
You need O3 Omni features on launch day
Your company requires a direct vendor relationship
You're generating 1,000+ clips/month (enterprise pricing kicks in)
Choose a third-party provider if:
You want per-second billing without prepaid commitment
Your volume is under 500 clips/month
You already use other AI models and want unified billing
You're cost-sensitive and don't need same-day model updates
For most developers, a third-party provider makes more sense unless you need day-zero model updates or enterprise-level volume discounts.
Evaluating other models too? See our Sora 2 API pricing breakdown and Veo 3 pricing guide.
FAQ
How much does Kling 3 API cost per second?
The official API costs $0.10–$0.48 per second depending on resolution and audio. Third-party providers offer lower rates — AIReiter charges $0.095/sec for 720p and $0.127/sec for 1080p without audio.
Is Kling 3 API free?
The consumer platform offers 66 free credits daily for web-based generation, but there's no free API tier. The smallest API package is $9.80. Third-party providers let you start with small per-generation payments instead of prepaid packages.
What's the difference between Kling 3 Standard and Pro?
Resolution. Standard outputs 720p, Pro outputs 1080p. The model architecture is identical — you're paying for more pixels, not better intelligence. For social media and web content, Standard is usually sufficient.
Which third-party provider is cheapest for Kling 3?
As of June 2026, EvoLink lists $0.075/sec for V3 720p. AIReiter charges $0.095/sec for 720p but supports 4K and native audio. Rates change — check provider pages before committing.
Can I use Kling 3 API for commercial projects?
Yes. Both the official API and third-party access include commercial usage rights. There's no separate license fee beyond the generation cost.
How long does Kling 3 API take to generate a video?
V3 typically completes a 5-second 1080p clip in 30–60 seconds. O3 with audio takes 60–90 seconds for the same duration due to the additional audio generation step.