Runway

Runway's developer API brings its generative video and image models, such as gen4.5, into your own apps. It supports text-to-video, image-to-video, image generation and upscaling, with official Node and Python SDKs.

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Runway at a glance

From official pages, checked Oct 5, 2026. Tap the arrow for each source.

Free tier: No
A $10 minimum credit purchase is required to get started.
Starting price: $0.01 per credit
gen4.5 video is 12 credits/second; gen4_turbo is 5 credits/second.
Rate limit: Tier 1: 1 concurrent video task
Entry tier allows 50 video generations per rolling 24 hours; tiers rise with spend.
Official SDKs: JavaScript / TypeScriptPython

What you can build with Runway

RunwayRecipeConfig

Generate a 5-second AI video clip from a prompt with the Runway API

Send an image and a text prompt to Runway's gen4.5 model from Node and get back a finished video URL.

Free tier: NoFrom $0.01 per credit

Video gen

Recent updatesAll updates

Oct 6, 2026
Runway SDK 4.21.0 adds Grok Imagine Video 1.5 Lite (Oct 2, 2026)
The official Node SDK now accepts grok_imagine_1_5_lite for text-to-video and image-to-video. Upgrade the package and swap the model.