Thesys, a company focused on AI software solutions, has announced the release of C1, a generative UI API that enables the creation of intelligent user interfaces in real time using large language models (LLMs).

Officially launched on April 18, C1 is now generally available for developers looking to accelerate the development of AI applications. The API allows dynamic interface generation based on natural language output from LLMs, making it easier to build responsive and personalized UIs without extensive front-end coding.

According to Thesys, while AI adoption is moving at full speed across industries, crafting intuitive and effective front ends for AI agents remains a significant obstacle. Many development teams find themselves investing months of time and resources into manually building static interfaces that often fail to engage users effectively.

C1 addresses this issue by enabling real-time generation of interface components that respond contextually to both data and user input. The generative UI system can interpret prompts in natural language, dynamically render relevant UI elements, and adjust layouts or behaviors based on ongoing interactions or state changes.

C1 supports a broad range of use cases and data types, and developers can guide interface behavior through structured system prompts. It also allows seamless integration with third-party services using function calls. Under the hood, the UI components are powered by the Crayon React framework, providing flexibility and modern web development tools.

Thesys reports that over 300 development teams are already working with its tools to create adaptive interfaces for AI-powered applications.