Thesys
Thesys offers C1, an API middleware that transforms large language model (LLM) text responses into dynamic, interactive user interfaces.
Our verdict
Who it's for
Augment LLMs to respond with interactive UI in real-time instead of text.
Who should look elsewhere
LLM tokens are billed separately, adding to the overall cost.
Pros
- +Significantly improves user engagement compared to text-only responses.
- +Accelerates AI frontend development by up to 10x and reduces costs by 80%.
- +Provides a flexible and adaptive UI that responds dynamically to user intent and context.
- +Compatible with existing AI stacks and various LLMs, preventing vendor lock-in.
- +Offers robust security and compliance features for enterprise use.
Cons
- −LLM tokens are billed separately, adding to the overall cost.
- −Requires integration with a React SDK, which might be a barrier for non-React users.
- −Artifacts API is billed separately from core C1 API calls.
Key features
- ✓Generates interactive UI components (charts, forms, cards, lists, tables, slides, reports) from LLM responses.
- ✓OpenAI-compatible API endpoint for easy integration.
- ✓Supports multiple LLMs including OpenAI, Anthropic, and Google.
- ✓React SDK for rendering generated UI.
- ✓Customizable UI to match brand and design systems.
- ✓Supports all tool-calls for connecting to external data (databases, documents, APIs).
- ✓Allows integration of custom React components with custom logic and styling.
- ✓Configurable actions, callbacks, and workflows.
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Free | $0 | month | Free credits for developers exploring Generative UI; 5K C1 API calls / month; Upgrade for additional usage |
| Build | $49 | month | Usage-based plan for teams ready to ship with GenUI.; 25K C1 API calls / month; $0.002 per call after that |
| Grow | $499 | month | Usage-based plan for teams ready to ship with GenUI.; 500K C1 API calls / month; $0.001 per call after that |
| Scale | — | month | Secure deployments for large orgs with scaled needs.; Everything in Grow; Self-hosting or VPC deployment options |