OpenAI has confirmed that Sora 2 and Sora 2 Pro API access ends September 24, 2026 — a deadline that, as of this writing, is essentially tomorrow. Whether you're racing to finish something on Sora 2 or already evaluating a replacement, it helps to see what AI video generation actually costs per second across providers, sourced from each one's own pricing documentation rather than a blog post's summary. Our free AI video generation cost calculator shows exactly that.
Sora 2 API pricing per second: the numbers before the sunset
Sora 2 Standard runs $0.10 per second at 720p; Sora 2 Pro ranges from $0.30/s at 720p up to $0.70/s at 1080p. Those rates become moot for new API usage after September 24, 2026 — the web and mobile Sora apps were already discontinued back in April 2026, so the API deadline closes the loop entirely.
Veo 3 vs Kling vs Runway cost: straight from official pricing pages
Pulled directly from Google's Gemini API pricing documentation: Veo 3.1 Lite runs $0.05-0.08/s depending on resolution, Fast runs $0.10-0.30/s, and Standard (with native audio) runs $0.40-0.60/s. Kling's official 3.0 model guide gives a worked example of $0.70 for a 5-second 1080p clip with sound — that's $0.14/s. Runway's official pricing page prices Gen-4.5 at 12 credits per second, which works out to roughly $0.10-0.23/s depending on your subscription tier's credit rate.
Why the per-second rate is shown right in the result
We checked a competing AI video cost calculator and found it asks for your clip count and length but never actually displays the dollar rate or its source anywhere on the page — you get a total with no way to check the math. Ours shows the exact per-second rate and which official document it came from every time you calculate.
How much does AI video generation cost, in practice
Five 8-second clips on Kling 3.0 (1080p, with audio) comes to $5.60. The same math applies to any provider and tier in the calculator — swap in your own clip count and length to see your actual project cost before you commit to a platform.
Try the AI Video Generation Cost Calculator → · Comparing text-model costs instead? See the AI Subscription vs API Cost Calculator.
Sources: Google, Gemini API pricing documentation (ai.google.dev/gemini-api/docs/pricing); Runway, official pricing page (runway.com/pricing); Kling AI, official 3.0 model guide (2026-02-06); OpenAI Help Center, Sora API sunset notice, cross-checked via topon.tech (2026-09-23). Pricing moves quickly in this category — verify current rates on each provider's page before committing to a real project.
