What is C1 by Thesys?
C1 is a Generative UI API that augments LLMs to respond with interactive UI like charts, forms, cards, and more, in real time. It integrates seamlessly with any LLM, framework, or MCP in just 2 lines of code. Ship AI apps 10X faster with 80% less UI overhead.
Problem
Users are manually building UI components for real-time AI applications which leads to high development overhead and slow deployment cycles.
Solution
A Generative UI API that augments LLMs to generate interactive UI elements (e.g., charts, forms) in real-time. Users can integrate with any LLM in 2 lines of code, reducing UI development effort by 80%.
Customers
Developers and engineering teams building AI applications requiring rapid UI iteration, especially in startups and SaaS companies.
Unique Features
Real-time UI generation directly from LLM outputs, framework-agnostic integration, and pre-built interactive components (charts, forms, cards).
User Comments
Slashes UI development time
Seamless integration with GPT/Claude
Highly customizable components
Critical for AI app scalability
Reduces frontend-dev dependency
Traction
Launched in 2024 with 5,000+ API calls/month, integrated into 50+ AI apps, featured in Y Combinator W24 batch.
Market Size
The global market for low-code development platforms, which includes AI-aided UI tools, is projected to reach $32 billion by 2028 (CAGR: 26% from 2022).
