# Runway Gen-4.5 AI Video Generator

> Gen-4.5 is Runway’s flagship video model. Make 5 or 10 second Gen-4.5 clips from a prompt or an image inside AutoFeed, vertical, horizontal or square, and see exactly what each clip costs.

- Canonical page: https://www.autofeed.ai/ai-videos/runway
- Publisher: AutoFeed.ai (https://www.autofeed.ai)
- Site overview for language models: https://www.autofeed.ai/llms.txt

## Key specifications

| Spec | Value |
| --- | --- |
| Made by | Runway |
| Input | Text or image |
| Clip length | 5 or 10 seconds |
| Aspect ratios | 9:16, 16:9, 1:1 |
| From | 2,400 credits |

## What Runway is good at

Runway is the New York company behind the Gen series of video models, used widely in film and advertising work. Gen-4.5 is its current flagship, known for motion quality and for following the prompt closely.

On AutoFeed, Gen-4.5 takes a text prompt or a starting image and renders 5 or 10 second clips at 720p in vertical, horizontal or square format. The clips have no generated sound.

AutoFeed runs Gen-4.5 through Replicate, so you pay per clip in credits instead of buying a separate Runway plan.

Use it for:

- Hero shots where motion quality matters most
- Prompts with specific staging that weaker models ignore
- Animating a product shot or key frame you already have

## What a Runway clip costs on AutoFeed

Plans: Hobby $19/month = 15,000 credits, Pro $59/month = 60,000 credits, Ultimate $249/month = 180,000 credits. Credits are shared with everything else made on AutoFeed.

| Variant | Input | Resolution | Length | Credits | Clips on Hobby | Clips on Pro | Clips on Ultimate |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Runway Gen-4.5 | Text or image | 720p | 5s | 2,400 | 6 | 25 | 75 |
| Runway Gen-4.5 | Text or image | 720p | 10s | 4,800 | 3 | 12 | 37 |

## How to make and post a Runway video

1. **Choose text to video or image to video**: Open the AI video editor and pick the input. Runway on AutoFeed takes text or image input.
2. **Pick a Runway variant**: Available now: Runway Gen-4.5. Each model card shows its starting price in credits.
3. **Write the prompt and set the clip**: Describe the shot, then choose the length (5 or 10 seconds), the resolution and the format (9:16, 16:9, 1:1). The credit cost updates as you change them.
4. **Generate**: The credits are deducted when generation starts and returned automatically if the model fails. The finished clip appears under your AI videos.
5. **Post, schedule or download**: Post the clip to a connected TikTok or YouTube account now, schedule it for a date and time, or download the MP4.

## Prompt tips for Runway

- Describe the camera and the subject separately ("handheld close-up; a chef flips a pancake").
- Use a starting image to lock the look, and the prompt only for motion.
- Ten seconds suits a slow reveal; keep fast action to 5 second clips.

## Frequently asked questions

### Do I need a Runway account?

No. AutoFeed runs Gen-4.5 through Replicate, so there is no separate Runway subscription.

### Do Runway clips on AutoFeed have sound?

No. Gen-4.5 generates video only. For a clip with generated sound, use Veo 3.1, Kling 2.6, Seedance 2.0, Vidu or Grok Imagine.

### How many credits does a Runway clip cost on AutoFeed?

From 2,400 credits (a 5 second Runway Gen-4.5 clip at 720p) to 4,800 credits (a 10 second Runway Gen-4.5 clip at 720p). The table on this page lists every combination of variant, resolution and length.

### How many Runway clips do I get on each plan?

Hobby ($19/month, 15,000 credits): 3 to 6 clips; Pro ($59/month, 60,000 credits): 12 to 25 clips; Ultimate ($249/month, 180,000 credits): 37 to 75 clips. Credits are shared across everything you make on AutoFeed, so clips on other models or faceless videos draw on the same balance.

### Can I try Runway for free?

The cheapest Runway clip costs 2,400 credits, more than the 1,000 free credits a new account receives, so Runway needs a plan. The free credits do cover a clip on a cheaper model such as Wan 2.2.

### Does Runway on AutoFeed add a watermark?

No. AutoFeed adds no watermark or logo. Each clip is delivered as an MP4 at 1080x1920 for 9:16, 1920x1080 for 16:9 or 1280x1280 for 1:1, ready to download or post.

### Is Runway text to video or image to video?

Both. Runway on AutoFeed accepts a text prompt on its own, or a starting image plus a prompt describing the motion.

### Can AutoFeed post Runway videos to TikTok and YouTube?

Yes, one clip at a time. When a clip is ready you can post it to a connected TikTok or YouTube account straight away, or pick a date and time to schedule it. AI video clips are not a recurring series: the series that write, render and post new videos on their own schedule are the faceless formats (AI slideshows, Reddit stories, Would You Rather, Pick One and Fake Text).

## Related

- [All AI video models](https://www.autofeed.ai/ai-videos)
- [Google Veo 3.1 AI Video Generator](https://www.autofeed.ai/ai-videos/veo-3)
- [Kling AI Video Generator](https://www.autofeed.ai/ai-videos/kling-ai)
- [Seedance AI Video Generator](https://www.autofeed.ai/ai-videos/seedance)
- [Hailuo AI Video Generator](https://www.autofeed.ai/ai-videos/hailuo-ai)
- [PixVerse AI Video Generator](https://www.autofeed.ai/ai-videos/pixverse)
- [Luma Ray AI Video Generator](https://www.autofeed.ai/ai-videos/luma-ray)
- [Wan AI Video Generator](https://www.autofeed.ai/ai-videos/wan-ai)
- [Grok Imagine AI Video Generator](https://www.autofeed.ai/ai-videos/grok-imagine)
- [Vidu AI Video Generator](https://www.autofeed.ai/ai-videos/vidu)
- [LTX AI Video Generator](https://www.autofeed.ai/ai-videos/ltx-video)
- [Video library](https://www.autofeed.ai/videos)
- [Faceless generators](https://www.autofeed.ai/generators)
- [Pricing](https://www.autofeed.ai/pricing)