Blank Space
AI coding agent in your browser
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What is Blank Space?
Blank Space is an open-source AI-powered web app builder and the first mobile-first vibe coding platform. It allows users to chat with AI to create web apps, games, and interactive experiences directly in their web browser. The platform features real-time live coding with genuine multi-file configuration and uses Sandpack for instant previews.
The tool is designed for creators who want to code without deep technical expertise. Users can describe what they want to build through natural language chat, and the AI agent generates the code, handles debugging, and enables deployment. It supports building full-stack applications from simple prompts, with features like instant previews, multi-file project support, and mobile optimization.
Blank Space is ideal for indie developers, hobbyists, students, and anyone interested in vibe coding—a new approach where you design with intent by describing the feel, mechanics, and style rather than writing code manually. It serves as an open-source alternative to paid AI coding platforms like Lovable, v0, and Bolt. The platform is self-hostable and optimized for mobile devices.
During its testing phase, Blank Space offers 50 free requests per day. The project is hosted on GitHub and has gained traction in the vibe coding community with over 90 stars and 1,000 weekly views within its first month.
Blank Space pricing
Pricing model: Freemium
Free tier: 50 free requests per day during the testing phase. The platform is open-source and self-hostable, which means you can host it yourself to avoid request limits. No paid plans are currently announced as the project is still in its testing phase.
Blank Space pros
- Open-source and free to use
- Mobile-first design optimized for mobile devices
- 50 free requests per day during testing
- Real-time live coding in the browser
- True multi-file configuration support
- Instant previews powered by Sandpack
- No coding required - chat with AI to build
- Self-hostable for full control
- Creates web apps, games, and interactive experiences
- Full-stack app generation from simple prompts
- Fast and simple user experience
- Handles code, debug, and deploy automatically
- Open-source alternative to paid tools like Lovable/v0/bolt
- Active community with 90+ GitHub stars
- GPU-free AI agent that actually works
Blank Space cons
- Still in testing phase with limited free tier
- Only 50 free requests per day
- May require free LLM credits for continued development
- New platform with limited documentation
- Depends on external AI model APIs
- May have rate limits during peak usage
- Self-hosting requires technical knowledge
- Not yet production-ready for enterprise use
- Limited integrations compared to established platforms
Frequently asked questions about Blank Space
What is Blank Space?
Blank Space is an open-source AI app builder and the first mobile-first vibe coding platform. It lets you chat with AI to create web apps, games, and interactive experiences directly in your browser with real-time live coding and instant previews.
Is Blank Space free to use?
Yes, Blank Space offers 50 free requests per day during its testing phase. It is also open-source, so you can self-host it for unlimited use if you have the technical knowledge to set it up.
Do I need to know how to code?
No coding required. You can build your own apps by simply chatting with the AI agent. Describe what you want to create, and the AI handles the code generation, debugging, and deployment.
What can I build with Blank Space?
You can build web apps, games, and interactive experiences. The platform supports full-stack application development, including companion apps, dashboards, and any browser-based interactive project.
How does vibe coding work?
Vibe coding lets you design with intent by describing the feel, mechanics, and style of your app through natural language chat. The AI agent composes the code, handles logic, and creates interactions that match your description without you writing code manually.
Can I self-host Blank Space?
Yes, Blank Space is self-hostable. As an open-source project, you can clone it from GitHub and run it on your own infrastructure for full control and unlimited usage.
What is Sandpack and how does it help?
Sandpack is the technology Blank Space uses for instant previews. It enables real-time code execution in the browser, so you can see your app as you build it without waiting for builds or deployments.
How does Blank Space compare to Lovable, v0, or Bolt?
Blank Space is an open-source clone of paid AI coding platforms like Lovable, v0, and Bolt. It offers similar features like chat-based coding and instant previews but is free and self-hostable, while the alternatives require subscriptions.
What is the demo video?
There is a demo video available on YouTube showing Blank Space in action. The demo showcases the live coding experience, multi-file support, and how quickly you can build apps through chat with the AI agent.
How do I get started with Blank Space?
Visit blankspace.build to start using it immediately with your 50 free daily requests. Alternatively, clone the GitHub repository at github.com/BrandeisPatrick/blank-space to self-host your own instance and contribute to the project.