Runway

Runway Gen-4.5

Runway's flagship developer video model for text- and image-guided clips, with professional formats and a predictable credit-per-second base rate.

Open provider docs See key facts

Plain-English overview

What Runway Gen-4.5 actually is

Gen-4.5 is available through Runway Dev for text-to-video and image-to-video generation. It is also one of the Runway models that can deliver ProRes, image sequences, and professional SDR/HDR formats.

The $0.12-per-second equivalent is the base generation rate. Professional formats, HDR profiles, upscaling, and other processing can add material surcharges, so production estimates should start with the final delivery format.

Good fit for

Editorial and post-production workflows
Text- or image-led cinematic clips
Teams already using Runway's media APIs

Category comparison

The facts that matter for video models

These are provider-published specifications, not Cody benchmark scores. Follow the linked sources for current limits and endpoint-specific exceptions.

Generation priceCurrent list price per generated second or the provider's closest billing unit.: 12 credits / sec = $0.12 / sec
Clip durationDocumented duration choices or maximum clip length.: 2–10 seconds
Maximum outputHighest provider-documented output resolution, with relevant constraints.: Endpoint and output-format dependent
Native audioWhether the endpoint generates synchronized audio with video.: No native audio listed
Input modesSupported text, image, video, reference, or motion inputs.: Text or image to video
Generation timeOnly shown when a provider publishes a range; not a Cody benchmark.: Not published

Pricing source: Runway ↗Speed basis: Runway ↗

API and provider access

Where to get Runway Gen-4.5

RunwayRunway model catalogOfficial Runway Dev access.RunwayRunway API pricingLive credit rates and format surcharges.

Availability

Regions and access stage

Available in the Runway developer API with text-to-video and image-to-video input.

Country and data-residency coverage depends on the Runway account and enterprise agreement.

Check live availability

Data and training

The route matters.

Data handling depends on the Runway plan and agreement. Review Runway's current terms, workspace controls, and any enterprise commitments before processing confidential media.

This is a concise reading of the cited provider material, not legal advice. A third-party gateway can have different storage, routing, training, and residency terms from the model maker's direct API.

Read the provider policy

Frequently asked questions

Runway Gen-4.5 FAQ

What is Runway Gen-4.5?

Runway's flagship developer video model for text- and image-guided clips, with professional formats and a predictable credit-per-second base rate. Gen-4.5 is available through Runway Dev for text-to-video and image-to-video generation. It is also one of the Runway models that can deliver ProRes, image sequences, and professional SDR/HDR formats.

When was Runway Gen-4.5 released?

Runway Gen-4.5 was released on December 1, 2025 according to the cited provider materials.

Where can I access Runway Gen-4.5?

Available in the Runway developer API with text-to-video and image-to-video input. The access routes listed in this guide are Runway, Runway.

How much does Runway Gen-4.5 cost?

$0.12 / generated second. Runway lists 12 credits per second and sells API credits at $0.01 each. Professional and HDR formats add surcharges.

Where is Runway Gen-4.5 available?

Available in the Runway developer API with text-to-video and image-to-video input. Country and data-residency coverage depends on the Runway account and enterprise agreement.

Is my Runway Gen-4.5 API data used for training?

Data handling depends on the Runway plan and agreement. Review Runway's current terms, workspace controls, and any enterprise commitments before processing confidential media. The policy belongs to the provider route and account terms, so verify it again before production use.

Research trail

Sources for this guide

Checked September 3, 2026

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