Runway Gen-4.5 API price, and what each video really costs
Runway. Price checked 7 Nov 2026; unchanged since we started tracking it. Source: the official pricing page. runway/gen-4.5
Price per second, and the real cost per video that works
Some videos don't work first time and get redone, and you pay for those tries too. The last columns show the real cost per video that works, for an 8-second clip, depending on how many work first time. The rates are examples, not measurements.
| Real cost per video that works, when this many work first time | |||||
|---|---|---|---|---|---|
| Option | Per second | Per 8s clip | 8 in 10 | 6 in 10 | 4 in 10 |
| standard | $0.120 | $0.960 | $1.20 | $1.60 | $2.40 |
Note: 12 credits/s at $0.01/credit. Gen-4 Turbo is 5 credits/s ($0.05/s); Aleph 2 is 28 credits/s ($0.28/s).
Questions
How much does the Runway Gen-4.5 API cost?
From $0.120 per second (standard), as listed on Runway's own pricing page. Price checked 7 Nov 2026; unchanged since we started tracking it. Prices change often, so check the source before you set your own prices.
What does a video that works really cost with Runway Gen-4.5?
Divide the cost per 8-second clip by the share that work first time. At $0.960 per 8-second clip and 6 in 10 working first time, each video that works costs $1.60, because the redone ones were paid for too.