Runway API v1

August 8, 2024 (August 8, 2026)

This is experimental API for for the Runway AI.

Our API supports all the functionality for Gen-4.5, Gen-4, Gen-4 Turbo available on the original Runway AI website. This includes Text/Image/Video-to-Video, Act Two, Aleph, Lip Sync, Images, Videos, Frames and more. We’re fully committed to bringing all the Runway AI website magic to our API customers.

The Videos is a unified video generation endpoint supporting 22 AI models: Seedance 2.5 (up to 30s, 50 references), Seedance 2.0, Seedance 2.0 Fast, Seedance 2.0 Mini, Grok Imagine 1.5, HappyHorse 1.0, Kling O3 4K/Pro/Standard (omni — Frames, Multishot, Edit Video), Kling 3.0 Pro/Standard, Kling 3.0 Motion Control (character animation via motion transfer), Kling 2.6 Pro/I2V, Wan 2.6 Flash, Wan 2.2 Animate, Veo 3.1, Sora 2/Pro, and Gen-4.5, Gen-4, Gen-4 Turbo with text-to-video, image-to-video, keyframe, and multi-reference (up to 9 mixed images + videos + audio, or 50 on Seedance 2.5) workflows. Accounts with a Runway Unlimited plan can use exploreMode to generate videos without using credits — all models except Veo 3.1 support unlimited mode.

The Videos Upscale upscales a video to 4K using Topaz AI (source aspect ratio preserved; max 40s). Unlimited with exploreMode.

The Images is a unified image generation endpoint supporting 12 AI models: FLUX.2 Max, FLUX.2 Klein, Nano Banana, Nano Banana 2, Nano Banana 2 Lite, Nano Banana Pro, GPT Image 1.5, GPT Image 1 Mini, GPT Image 2, Seedream 5, Gen-4, and Gen-4 Turbo with text-to-image and reference image workflows. Nano Banana, Nano Banana 2, Nano Banana 2 Lite, and Nano Banana Pro support image references of famous people and minors, unlike Google Flow. Accounts with a Runway Unlimited plan can use exploreMode to generate images without using credits — all models support unlimited mode.

The Lip Sync enables you to use an image or video to create generative videos where the selected face speaks lines from your audio clips or AI-generated voices (28+ languages, model eleven_multilingual_v2).

For free Runway accounts, the following features are unlocked with this experimental API:

Unlimited number of Image Upscaler generations
Unlimited number of Transcribe generations
Unlimited number of Super-Slow Motion generations
Unlimited number of Frames Describe generations

💲 Cost calculator

Current Runway credit prices and plans

Select Subscription Plan

Name	Cost $	Credits	Single credit cost
Pro monthly (2250 credits per month)	$35	2250	$0.01556

Generation	Credits	Price
Seedance 2.5 480p (per sec)	20	$0.31
Seedance 2.5 480p 5sec	100	$1.56
Seedance 2.5 480p 30sec	600	$9.33
Seedance 2.5 720p (per sec)	30	$0.47
Seedance 2.5 720p 5sec	150	$2.33
Seedance 2.5 720p 30sec	900	$14.00
Seedance 2.0 480p / 720p (per sec)	36	$0.56
Seedance 2.0 1080p (per sec)	40	$0.62
Seedance 2.0 5sec	180	$2.80
Seedance 2.0 15sec	540	$8.40
Seedance 2.0 Fast (per sec)	29	$0.45
Seedance 2.0 Fast 5sec	145	$2.26
Seedance 2.0 Mini (per sec)	16	$0.25
Seedance 2.0 Mini 5sec	80	$1.24
Gen-4.5 (per sec)	12	$0.19
Gen-4.5 5sec	60	$0.93
Gen-4 / Gen-4 Turbo (per sec)	12	$0.19
Gen-4 Aleph (per sec)	15	$0.23
Aleph 2.0 (per sec)	28	$0.44
Aleph 2.0 5sec	140	$2.18
Veo 3.1 8sec	320	$4.98
Grok Imagine 1.5 480p 5sec	51	$0.79
Grok Imagine 1.5 720p 5sec	81	$1.26
Nano Banana image	5	$0.08
Nano Banana 2 image	7	$0.11
Nano Banana 2 Lite image	4	$0.06
Nano Banana Pro 2K image	20	$0.31
Nano Banana Pro 2 2K image	11	$0.17
Gen-4 image	8	$0.12
Gen-4 Turbo image	2	$0.03
Lip Sync / Act-Two generated speech (per 50 characters)	1	$0.02

Setup Runway

Postman collection (August 8, 2026)
LLM-friendly API spec Feed this to your LLM to build integrations

Q&A: How is your experimental Runway API different from the official Runway API?

Articles:

Examples:

Developer Community:

Runway API v1

Select Subscription Plan

Table of contents