Runway
Runway (RunwayML) is a generative AI media platform whose developer API turns text, images, and video into new video, images, speech, and character performances. The REST API at https://api.dev.runwayml.com/v1 exposes Runway's Gen-4 and Gen-4 Turbo video models, Gen-4 Image text-to-image, the Aleph video-to-video editing model, and Act character performance, all through an asynchronous create-task-then-poll pattern authenticated with a Bearer API secret and a dated X-Runway-Version header. Access is API-key based via a developer organization; usage is billed in credits at roughly $0.01 per credit.
Runway publishes 8 APIs on the APIs.io network, including Image-to-Video API, Text-to-Image API, Video-to-Video API, and 5 more. Tagged areas include Video Generation, AI Video, Generative AI, Text-to-Video, and Image-to-Video.
Runway’s developer surface includes documentation, signup flow, engineering blog, and 6 more developer resources.
API Rating
APIs
Runway Image-to-Video API
Generate video from a starting (and optional ending) image and a text prompt using Runway's Gen-4 Turbo and Gen-4.5 models (and the deprecated Gen-3 Alpha Turbo). Submitting a P...
Runway Text-to-Image API
Generate still images from a text prompt (and optional reference images) using the Gen-4 Image and Gen-4 Image Turbo models. Runs as an asynchronous task, and the resulting imag...
Runway Video-to-Video API
Transform an existing video with a text prompt and optional reference keyframes using Runway's Aleph video-to-video editing model - restyle, alter, or re-render footage. Submitt...
Runway Character Performance API
Drive a character (image or video) with a reference performance video using the Act-Two model, transferring facial expression and body motion onto the target character. Runs as ...
Runway Text-to-Speech API
Synthesize speech audio from text, used to add voice-over to generated video. Billed per character. Runs as an asynchronous task and polled on the Tasks API for the resulting au...
Runway Video Upscale API
Upscale a generated or uploaded video to a higher resolution. Runs as an asynchronous task, billed per output frame, and polled on the Tasks API.
Runway Tasks API
Retrieve the status and output of a generation task (PENDING, RUNNING, SUCCEEDED, FAILED) by id, or cancel/delete a running task. Every generation endpoint returns a task id tha...
Runway Organization API
Return the usage tier and remaining credit balance for the developer organization tied to your API key, so integrations can check credits before submitting billable generation t...
Collections
Runway API
OPENPricing Plans
Rate Limits
FinOps
Runwayml Finops
FINOPSResources
Get Started 1
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API