---
title: "Runway Gen-4.5: workflow fit, costs and terms"
description: "Short non-explicit trailer shots with ProRes, image-sequence or HDR delivery"
language: en
canonical: https://bestadultgames.io/en/developers/models/runway-gen-4-5
---

[Developers](https://bestadultgames.io/en/developers.md) / [video models](https://bestadultgames.io/en/developers/models?category=video)

model · Documentation reviewed · 5 October 2026

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# Runway Gen-4.5

Short non-explicit trailer shots with ProRes, image-sequence or HDR delivery

- **Availability**: available
- **Where it runs**: hosted
- **Costs**: Runway Dev bills Gen-4.5 in credits per generated second. ProRes, PNG sequences, 10-bit SDR and HDR add format surcharges. Budget for discarded takes as well as the final clip.
- **Adult content policy**: restricted

Gen-4.5 is a strong choice for short trailer shots that need ProRes, image sequences or HDR for finishing. Text and image inputs let you build a shot from a brief or animate approved artwork. For an adult game, its useful territory is non-explicit atmosphere, transitions and carefully reviewed character moments alongside genuine gameplay footage. Check every generated shot for anatomy, character continuity and fidelity to the game's art direction before it reaches the timeline. Better export formats give an editor room to work, but they cannot rescue a broken pose or a trailer that promises mechanics the game doesn't have.

## Commercial use & license

Proprietary hosted model governed by Runway's service terms. Its commercial-use guidance permits commercial use of generated content; no license for downloadable model weights is established.

## Adult content rules

Runway's hosted service prohibits adult nudity and sexually explicit content. It also limits some sexually suggestive content, including underwear or lingerie.

[Read the policy](https://runway.com/safety/usage-policy)

## What you need

Use a funded Runway Dev project and API key, with model gen4.5. Set outputFormat to mp4, prores or png_sequence for SDR delivery; native HDR requires a dedicated HDR outputFormat.

Ranks are recommendations for the task described, based on reviewed documentation. Model ranks cover non-explicit development work. We have not run practical benchmarks. Check content policies and commercial terms separately. [How the ranks work](https://bestadultgames.io/en/developers/methodology.md)

### Sources & further reading

- [Runway model catalog and endpoint IDs](https://docs.dev.runwayml.com/guides/models/)
- [Runway commercial use guidance](https://help.runwayml.com/hc/en-us/articles/21668707517587-Can-I-use-the-content-I-made-in-Runway-for-commercial-purposes)
- [Runway usage policy](https://runway.com/safety/usage-policy)

Last checked 5 October 2026.

## Why consider it

- Build shots from a text brief or animate approved artwork
- ProRes and PNG sequences for editing and compositing
- Native HDR outputs for a compatible finishing pipeline

## Tradeoffs to plan for

- Professional and HDR exports add per-second charges
- Every shot needs anatomy and character-continuity checks
- Adult nudity and explicit sexual content are prohibited

The tier reflects documented fit for the workflow described here and availability. No numeric score or hands-on performance results are provided.

[Compare with other models](https://bestadultgames.io/en/developers/compare?model=runway-gen-4-5)

## Related guides

AI video · Intermediate · 5 min read

### [Choose an AI video model for a game production](https://bestadultgames.io/en/developers/guides/choose-ai-video-model-for-games.md)

Choose an AI video model for game assets by checking controls, content rules, rights and cost, then comparing takes made with your approved art.

Read the guide → A reading priority

AI video · Intermediate · 5 min read

### [Build consistent character clips and seamless game loops](https://bestadultgames.io/en/developers/guides/consistent-character-video-loops.md)

Approve character art, plan restrained motion, check continuity and loop seams, then export video, editable sound and a still fallback for your game.

Read the guide → A reading priority