Fusion
Fusion is a new framework from Builder.io designed to build performant, AI-powered visual development tools. While source-available, it is part of Builder’s commercial platform and supports fine-grained reactivity, high-performance rendering, and custom visual editor creation. Inspired by modern frameworks like React and Solid, Fusion introduces a compiler-driven architecture for fast, composable UIs. It's designed to power internal tools at Builder.io and is now available for developers building visual CMS experiences, embedded editors, and AI-native applications.
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Demo Video for Fusion
Developer
Founded by Steve Sewell, Builder.io develops a visual development platform that helps digital teams create and optimize digital experie…read more
Pricing and Plans
(Freemium)
Free
Free
- Up to 10 users
- 25 monthly AI credits (10 daily limit)
- 1 space
- Integrations with GitHub, Figma plugin, VS Code extension
- Built-in MCP Servers
Pro
$24/month
- Up to 20 users
- 100 monthly AI credits
- +25 credits per $ for additional usage
- 30-day Activity History
- Standard Support
- Everything in Free
Enterprise
Contact for pricing
- Custom user seats
- Custom AI Credits
- Custom spaces
- Faster machines
- Custom RBAC
- Remote workspaces
- Custom MCP servers
- Component mapping
- SSO
- Uptime and Premium Support SLAs
- Assigned Customer Success Manager
- Add-ons: Use your own LLM, Private Slack Channel
- Everything in Pro
Free Trial
14 days
- Free trial available
System Requirements
Operating System
WINDOWS, MACOS, LINUX
Memory (RAM)
4GB+ recommended
Processor
Modern multi-core processor
Disk Space
200MB
AI Capabilities
AI-enhanced UI development
Integration with AI agents for low-code editing
Customizable AI-driven design tooling