Thesys Unveils C1 API Pioneering Generative UI Technology
Thesys introduces C1, the first Generative UI API, enabling teams to accelerate product design and reduce costs. Enterprises can now create custom interfaces effortlessly by integrating with existing LLMs or visualizing internal data through Thesys C1.
Thesys has introduced C1, the world's first Generative UI API, marking a significant leap in AI-powered interface design. This innovation allows developers to transform LLM outputs into dynamic, real-time applications, streamlining product development and reducing costs.
Key Highlights
- C1 by Thesys: The first API designed for Generative UI (GenUI), enabling real-time creation of interactive interfaces.
- Accelerated Product Design: Teams can leverage GenUI to speed up design processes, cut costs, and enhance development efficiency.
- Custom Interfaces: Enterprises can seamlessly replace existing LLMs or visualize internal data through C1, creating tailored user experiences.
The Impact of Generative UI
Generative UI eliminates the need for manual screen design, allowing AI to generate adaptive, personalized interfaces on the fly. This not only speeds up front-end development but also redefines user engagement by delivering unique experiences for each user.
"For many enterprises, the front-end has long been a bottleneck in deploying AI at scale," said Rabi Shanker Guha, co-founder and CEO of Thesys. "C1 integrates seamlessly with modern frameworks, abstracting UI complexity and enabling teams to focus on solving harder problems."
Seamless Integration
Thesys C1 is designed to work effortlessly with modern tech stacks, whether teams are building new AI agents or enhancing existing systems. This flexibility ensures that enterprises can adopt GenUI without overhauling their infrastructure.
Parikshit Deshmukh, co-founder and President of Thesys, emphasized the transformative potential of GenUI: "AI is making software smart, and smart software deserves a smarter interface. Imagine every app tailored just for you—that’s the power of Generative UI."
Availability and Adoption
C1 by Thesys is now available for general use, with over 300 teams—from startups to established enterprises—already leveraging its capabilities. Backed by a team of former Google, Stripe, and Salesforce employees, Thesys is actively collaborating with businesses to accelerate AI-native software development.
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About the Author

David Chen
AI Startup Analyst
Senior analyst focusing on AI startup ecosystem with 11 years of venture capital and startup analysis experience. Former member of Sequoia Capital AI investment team, now independent analyst writing AI startup and investment analysis articles for Forbes, Harvard Business Review and other publications.