Thesys

🖼️ Tool Name:

Thesys 

✏️ What does this tool offer in 2026?

• C1 API Middleware: A first-of-its-kind "UI Layer" that sits between your LLM (GPT-5, Claude 4, etc.) and your frontend. It captures model outputs and converts them into structured UI specifications.

• Crayon SDK (React SDK): A high-performance library that consumes C1 responses and renders them as live, interactive React components. It handles streaming, partial rendering, and event state.

• OpenAI-Compatible Integration: The C1 API uses the same endpoints and parameters as OpenAI’s SDK, allowing you to adopt Generative UI by simply changing your baseURL and model name.

• Adaptive Components: Unlike static widgets, Thesys components are context-aware. If a user asks about sales trends, it renders a chart; if they need to update a profile, it renders a functional form.

• C1 Artifacts API: A specialized tool for building "Artifacts" (similar to Anthropic's) that allows users to generate and collaborate on interactive reports, slides, and complex documents within a chat interface.

• MCP Integration: (2026 Update) Supports the Model Context Protocol, allowing you to add "C1" as a tool to AI apps like Cursor or ChatGPT to generate live, editable UI elements.

• Bring Your Own Components: Developers can register their own custom React components, ensuring that the AI-generated UI perfectly matches the existing branding and design system.

• Enterprise Security: Fully compliant with SOC2, ISO27001, and GDPR, featuring a "Zero Data Retention" policy to ensure enterprise-grade privacy.

⭐️ What does it offer? (User Experience)

• "The Death of Text Walls": Rated 4.8/5 for significantly improving user engagement. Users prefer interacting with a chart or a button over reading long, descriptive paragraphs.

• 10x Faster Deployment: Teams can ship complex AI interfaces without a massive frontend overhead, reducing time-to-market and development costs by up to 80%.

🤖 Automation:

• Autonomous UI Assembly: The AI agent doesn't just suggest code; it actually assembles the user interface for the end-user in real-time based on their specific goals.

💵 Pricing (January 2026 Status)

Thesys uses a developer-friendly "pay-per-generation" and subscription-hybrid model.

🎁 Is the free version a trial or completely free?

It is Freemium. The Starter plan is free indefinitely for experimentation and personal projects, though it has limits on the number of interactive UIs generated per month.

⚙️ Access or Source:

• Official Website

• SDK: Available via 

🔗 Experience Link: 

https://www.thesys.dev/