Thesys is going open source! We're going open source Blog Articles Generative UI: What It Is and Why It Matters Why We're Open Sourcing OpenUI What Is an AI Agent Builder, How It Works, & How to Build One AI Copilots: A Complete Guide to Intelligent Assistance What Are AI Agents: Types, Capabilities, and Real-World Use Top LLMs 2025: Understanding the Models Behind Modern AI Systems ChatKit: What It Is, What It Isn’t, and Where C1 Fits In PowerPoint Automation Reimagined with C1 Artifacts API The Future of AI Interfaces is Generative MCP UI: Making AI Apps Interactive What Is AG-UI and Why It Matters for AI-Native User Interfaces How to design AI-Native Conversational Interfaces: From Templates to Generative UI GPT 5 vs. GPT 4.1 How to Build Generative UI Applications Implementing Generative Analytics with Thesys and MCP Evolution of Analytics: From Static Dashboards to Generative UI Why Generating Code for Generative UI is a bad idea Building the First Generative UI API: Technical Architecture and Design Decisions Behind C1 How we evaluate LLMs for Generative UI Generative UI vs Prompt to UI vs Prompt to Design Articles of Interest How Thesys Plans To Change The Look And Feel Of AI Forever Thesys introduces C1 to launch the era of Generative UI AI software firm Thesys raises $4 million