Pricing
Runway's Gen-4.5 video model on the developer API at 12 credits per second. The pricing row does not name a resolution.
This rate is not tied to 720p, 1080p, or 4K on the source page. The resolution toggle does not change it.
$0.12/s × 5s × 1
$0.60
Reference images, input video, credit minimums, and tax are not included unless the note on this page says so.
Runway's own model. Runway Dev resale rate fetched 2026-11-03. 1 credit = $0.01. Not the lab's own checkout unless the model is Runway's. Professional and HDR formats add a per-second surcharge on Gen-4.5 and Aleph 2.0.
Source: https://docs.dev.runwayml.com/guides/pricing/
Full spec