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The Surfaces of Runway: Where It Lives
A map of every Runway surface and which one to use for each task.
What You Will Learn
- Name every surface where Runway is available.
- State which surface is best for each task.
- Explain web vs API.
- Choose the right surface.
- Recognize surface overlaps.
Why This Matters
Most beginners discover the Runway web app and stop there. That leaves real value on the table, because Runway is also available as a mobile app and a REST API for developers. Each surface has different strengths: the web app is best for full generation and editing, the API is best for automation and integration, and the mobile app is best for on-the-go generation. Knowing which surface to reach for saves time and prevents frustration.
Concept Explained
Runway is exposed through three primary surfaces. The web app at runwayml.com is the flagship: full text-to-video, image-to-video, video-to-video, editing tools, and asset management. The Runway API exposes the same generation capabilities to developers building their own applications, with billing based on credits. The Runway mobile app (iOS) mirrors most web features for on-the-go generation and quick sharing. Each surface has the same underlying models — the difference is in how you interact.
How It Works
When you submit a prompt to any Runway surface, the surface packages your input plus settings and sends it to Runway's backend. The backend generates video, returns it, and the surface plays or saves it. The model is the same across surfaces — the difference is in what each surface lets you do. The web app is most permissive (all features), while the API gives you programmatic control for automation.
Step-by-Step Tutorial
1. Open the web app
Go to runwayml.com in your browser. Sign in. This is the primary surface you will use throughout the course.2. Explore the API documentation
Visit docs.runwayml.com. Familiarize yourself with the API structure.3. Install the mobile app (optional)
Search 'Runway' in the App Store (iOS). Install and sign in with the same account.4. Compare a task on two surfaces
On web, generate a short video. On mobile (if installed), try the same prompt.5. Pick your primary surface
For most users, web is the better primary surface. Use API for automation, mobile for on-the-go.Real-World Example
A content creator uses the web app for serious video generation — long prompts, asset management, editing. He uses the mobile app to capture inspiration on the go — quick prompts for later refinement. For his automated YouTube channel, he uses the API to generate video programmatically. The three surfaces serve different needs in his workflow.
Common Mistakes
- Using only one surface for everything. API is faster for automation; web is better for craft.
- Confusing mobile and web libraries. They sync, but with occasional delay.
- Picking the API for one-off generation. The web app is simpler for that.
- Switching surfaces mid-project unnecessarily. Each switch adds friction.
- Ignoring the API when you have repetitive tasks. If you generate the same type of video daily, automate.
Best Practices
- Default to the web app for serious generation work.
- Use the API for automation, integration, and high-volume generation.
- Use the mobile app for on-the-go capture and quick sharing.
- Pick a primary surface for a given project.
- Explore all three to understand their strengths.
Troubleshooting
| Problem | How to Fix |
|---|---|
| Library does not sync | Sign out and back in. Verify the same account. |
| API key does not work | Check that the key is correct and has not expired. Verify billing is active. |
| Cannot find a feature on mobile | Some features are web-only. Check the web app. |
Practical Exercise
Your Turn
Visit runwayml.com and docs.runwayml.com. Familiarize yourself with both surfaces. If you have an iPhone, install the mobile app and compare the experience.
Key Takeaways
- Three surfaces: web, API, mobile.
- Web app is the flagship with full features.
- API is for automation, integration, and high-volume generation.
- Mobile app is for on-the-go capture.
- Pick a primary surface for each project.
Frequently Asked Questions
Is the mobile app free?
Can I use the API for free?
Does the mobile app work offline?
Can I generate on mobile and edit on web?
Which surface should I start with?
Further Reading
Official References
SEO Metadata
SEO title: The Surfaces of Runway: Where It Lives
Meta description: A map of every Runway surface and which one to use for each task.
Primary keyword: runway surfaces
Secondary keywords: runway web app, runway api, runway mobile app, runway platforms
Search intent: Informational
URL slug: /runway-surfaces-where-it-lives-map
Categories: AI Tools, Runway
Tags: Runway, Beginner, Surfaces, Web, API, IMCSEIAN, Tutorial, IMCSEIAN
Featured image concept: IMCSEIAN Runway lesson card for The Surfaces of Runway: Where It Lives
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