Two of 2026's leading AI video models, compared on what actually matters: price per second, audio, output quality and the jobs each one wins. Based on the same public pricing data as our cost calculator.
| Sora 2 / Pro | Kling 3.0 | |
|---|---|---|
| Maker | OpenAI | Kuaishou |
| 720p $/sec | $0.10 | $0.04 |
| 1080p $/sec | $0.50 (Pro only) | $0.08 |
| Native audio | ✔ Included | ✘ None |
| Best at | Long coherent shots, storytelling, scene logic | Best price-to-quality ratio, human motion |
| Watch out | 1080p locked behind Pro; slower queues | No native audio; watermark on free tier |
Approximate public list prices as of August 2026. Run your exact clip length through the cost calculator — and remember the retry tax: real cost ≈ list × 3.
Clips that need sound or a plot. Sora's native audio and scene coherence mean a single generation can be publish-ready. For faceless-channel b-roll with ambient sound, it removes an entire post-production step.
High-volume pipelines. At roughly half Sora's base price with excellent human motion, Kling is what you use when you need 30 clips this week. Silent output is fine when your workflow adds voiceover anyway.
Publishing a few polished clips: Sora. Feeding a content machine that adds its own audio: Kling — the math is hard to argue with at scale.
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Full 10-model landscape: AI Video Model Comparison. Prompt formats differ per model too — grab ready examples in the prompt libraries.
Also worth reading: the 12 mistakes that waste AI video money, including paying for audio you never use.
Sora 2 at $0.10 and Kling 3.0 at $0.04–0.08 are the two budget-friendly heavyweights. Sora buys you audio and story logic; Kling buys you the most usable seconds per dollar, period.
Kling via API resellers starts around $0.04/sec for 720p — roughly 60% cheaper than Sora's base tier. Factor in retries and the gap widens further.