Thesys
Builds dynamic, real-time UIs with C1 Generative UI API

What is Thesys?
Thesys is an UI Generation tool that builds dynamic, real-time UIs with C1 Generative UI API. Thesys is a paid tool. It is aimed at developers and ai product teams.
Thesys provides frontend infrastructure for AI products, enabling the creation of dynamic, real-time user interfaces. It uses the C1 Generative UI API to augment LLMs, allowing them to generate interactive UI elements like charts, forms, and cards instead of plain text.
Built for developers and ai product teams.
Key capabilities
Features
Generative UI API
Augments LLMs to respond with interactive UI elements like charts, forms, and cards in real-time
Real-Time UI
Creates dynamic, real-time user interfaces for AI products
C1 API
Generative UI API for interactive elements
Interactive UI
Generates interactive UI elements like charts, forms, and cards
Automated UI
Automates the creation of user interfaces for AI products
AI Interface
Generates user interfaces using AI technology
Generative Interface
Creates interfaces through generative AI methods
Agent UI
UI for AI agents with interactive elements
Use cases
- Generate interactive UI elements like charts, forms, and cards for AI products
- Create dynamic, real-time user interfaces for AI applications
- Augment LLMs with interactive UI components for better user engagement
Who it's for
- Developers
- AI Product Teams
Pros & cons
Pros
- Public API available
- Usage-based pricing model
- Custom/enterprise pricing available
Cons
- No free plan available
- Limited to ~100 calls/day (3K/month)
Pricing
Paid.
| Plan | Price |
|---|---|
| Free | $0 |
| Pro | $2 |
AI models
- Claude Sonnet 4.5
- Gemini 3.1 Pro
Developer & API
Public SDK API available
Security & compliance
- SOC 2
- ISO 27001
- GDPR
- SSO
- SAML
- Data deletion
As stated on Thesys's website — not independently verified by AiByts.
FAQ
What is Thesys?
Thesys is an UI Generation tool that builds dynamic, real-time UIs with C1 Generative UI API. Thesys provides frontend infrastructure for AI products, enabling the creation of dynamic, real-time user interfaces. It uses the C1 Generative UI API to augment LLMs, allowing them to generate interactive UI elements like charts, forms, and cards instead of plain text.
Is Thesys free?
No, Thesys is a paid tool.
How much does Thesys cost?
Thesys offers 2 plans: Free ($0) and Pro ($2).
Does Thesys have an API?
Yes, Thesys offers a public SDK API for building custom integrations.
Who should use Thesys?
Thesys is built for developers and ai product teams. Common uses: generate interactive UI elements like charts, forms, and cards for AI products, create dynamic, real-time user interfaces for AI applications and augment LLMs with interactive UI components for better user engagement.
What are the best alternatives to Thesys?
Similar tools on AiByts include Forge, Uiverse.io, Handle, Lunagraph and Balsa UI.
Details are compiled from Thesys's website and public sources, last verified Oct 6, 2026. Features and pricing change — confirm on the official site before you buy.
Try Thesys
Paid
Tags
- Generative UI
- AI User Interface
- Interactive UI
- Real-Time UI
- Automated UI
- AI Interface
- Generative Interface
- Agent UI
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