Side by side
Flowstep vs Thesys
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Generate real UI in seconds
Frontend infrastructure for AI products.
Primary task
UI design
UI design
Pricing
Freemium · Free + from $15/mo
Free Trial · Trial; then from $1.60
Pricing details
Free + from $15/mo
Free + from $1.60
Billing cycle
Monthly
Pay-as-you-go
API access
Not documented
Not documented
Platforms
Web
Web
Integrations
Figma, MCP
MCP
Source rating
5.0 / 5 · 3 ratings
5.0 / 5 · 3 ratings
Catalog views
16k
1.6k
Estimated monthly traffic
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Catalog imported
31 Aug 2026
30 Aug 2026
Listed strengths
- Generates UI designs instantly
- Infinite canvas
- No complex design tool knowledge required
- Simultaneous multi-screen generation
- Real-time collaboration
- Generative UI API
- Dynamic Real-time UIs
- Uses React SDK
- Supports Large Language Models
- Customizable Interfaces
Listed limitations
- No offline functionality
- Limited manual edits capability
- Doesn't build the backend functionality
- Can't pre-set theme or design system
- No localization
- Requires engineering setup
- Depends on LLM accuracy and prompt quality for UI generation
- Outputs can vary slightly, making results non-deterministic
- Design system integration is still evolving
- Real-time rendering may add performance overhead at scale