How to Use Runway AI | Complete 2026 Guide: Gen-3, Gen-4 & Gen-4.5 Features

Runway AI offers a lineup of cutting-edge video generation models — Gen-3, Gen-4, and the latest Gen-4.5 — used by creative professionals worldwide. This 2026 guide walks you through every model, how to use each one, prompting strategies, and up-to-date pricing.

→ Runway AI Complete Guide | Pricing, Features & Full Tutorial

Runway Model Comparison: Gen-3, Gen-4 & Gen-4.5

Recommendation: For new projects in 2026, use Gen-4.5 as your default. Gen-3 Turbo is still useful for quick iteration and draft generation.

How to Use Runway Gen-4 / Gen-4.5: Step-by-Step

Text to Video

1. Go to app.runwayml.com and log in
2. Select “Generate” → “Video”
3. Choose your model: Gen-4 or Gen-4.5 from the model selector
4. Choose “Text to Video”
5. Enter your prompt (English gives best results)
6. Select video duration: 5 or 10 seconds
7. Set resolution and aspect ratio (16:9 recommended for most use cases)
8. Configure camera motion if needed
9. Click “Generate”

Image to Video

1. Choose “Image to Video”
2. Upload a reference image (JPG or PNG, 1080p+ recommended)
3. Add a text prompt describing desired motion
4. Adjust motion intensity (Amplitude) — lower values = more subtle motion
5. Click “Generate”

Gen-4.5 Exclusive: Multi-Scene Consistency

Gen-4.5 introduces improved cross-scene character consistency. To leverage this:

1. Generate a “reference frame” — your first video with the key character/scene
2. Use the first frame of that video as the input image for your next generation
3. Keep the same character description in your prompt
4. Gen-4.5 will maintain visual consistency across multiple clips

How to Use Runway Gen-3 (Legacy)

Text to Video (Gen-3)

1. Go to app.runwayml.com and log in
2. Select “Generate” → “Video”
3. Choose Gen-3 Alpha or Gen-3 Alpha Turbo from the model selector
4. Enter your prompt and adjust settings
5. Click “Generate”

Note: Gen-3 is still available on all plans and produces strong results. Gen-4.5 is recommended for new projects, but Gen-3 Turbo remains the fastest and most credit-efficient option.

Prompt Writing Tips for All Models

Effective Prompt Structure

[Subject] + [Action/Motion] + [Camera Movement] + [Visual Style] + [Lighting]

Example: A woman walking slowly through a rainy city street at night, camera tracking smoothly from behind, cinematic style, blue hour lighting, shallow depth of field

Scene-by-Scene Prompt Examples

Urban / Street Scene:
A businessman walking through Times Square at night, neon reflections on wet pavement, slow dolly shot, cinematic 4K

Nature Scene:
Waves crashing against rocky cliffs at golden hour, dramatic aerial view, smooth sweeping camera motion, ultra-realistic

Portrait / Character Scene:
Close-up of a woman with flowing hair in gentle wind, soft bokeh background, emotional expression, shallow depth of field

Gen-4.5 Tip — Character Consistency:
Same woman as previous scene, now sitting at a cafe, warm afternoon light through windows, casual conversation, realistic skin texture
Include “same [subject] as previous scene” to improve continuity across clips.

Runway Credit Pricing (2026)

Estimated credit cost: ~50 credits per 5-second video (Gen-3 Alpha / Gen-4 / Gen-4.5); ~20 credits with Gen-3 Turbo. The Unlimited plan is the most cost-effective for teams producing 10+ videos per week.

Common Issues & Solutions

Video quality is poor: Add more specific details — describe the lighting, atmosphere, and camera movement. Switch from Gen-3 Turbo to Gen-4.5 for higher quality output.

Unexpected motion or objects: Use the “Camera: Static” setting and reduce motion amplitude. Add a negative prompt to exclude unwanted elements.

Character looks different across clips: Use Gen-4.5 and reference the first clip’s frame as the input image. Include character descriptors in every prompt.

Scene content is off: Use negative prompts to explicitly exclude elements you don’t want in the video.

Slow generation: Switch to Gen-3 Turbo for faster results during prototyping. Use Gen-4.5 only for final outputs.

Frequently Asked Questions

Q: What is the difference between Gen-3 and Gen-4?
A: Gen-4 offers significantly improved character consistency, more realistic physics, and better prompt adherence compared to Gen-3. Gen-4.5 further refines these capabilities. For new projects, Gen-4.5 is recommended.

Q: Can I use Runway for commercial work?
A: Yes. Content generated on the Standard plan and above can be used commercially, subject to Runway’s terms of service.

Q: Should I use Gen-3 or Gen-4.5?
A: Use Gen-4.5 as your default for final production. Use Gen-3 Turbo for fast prototyping and draft generation — it’s 2–3x cheaper in credits.

Q: Can I animate my own photos?
A: Yes — use the “Image to Video” feature with any JPG or PNG. Gen-4.5 handles this especially well for photorealistic output.

Q: How do I get consistent characters across multiple videos?
A: Use Gen-4.5, reference the first frame of your previous clip, and keep the same character description throughout your prompts.