Overview of Thesys
Présentation détaillée
✅ Strengths
- Generative UI: transforms LLM outputs into interactive components
- OpenAI-compatible endpoint, integration in just a few lines of code
- Compatible with all major LLMs (OpenAI, Anthropic, Geminiu2026)
- C1 Artifacts API for generating slides and reports in real-time
- Free tier with $10 in credits to get started without a credit card
- Agent Builder no-code to create agents with visual interface
⚠️ Limits
- Tool designed for developers, little accessible to non-technical users
- Young documentation with limited examples for advanced cases
- Usage-based billing that can become expensive at high volume
- Interface and resources in English only
Thesys est-il fait pour vous ?
✓ Ideal if you…
- ✓ AI agent developers seeking UI responses
- ✓ SaaS startups integrating LLMs into their products
- ✓ Teams building adaptive AI dashboards
- ✓ Builders wanting to go beyond the text chatbot
✗ To avoid if you…
- ✗ Non-developer users without API skills
- ✗ Projects that don’t need a dynamic interface
- ✗ SMBs without dedicated internal technical resources
- ✗ Simple use cases needing plain text only
🎯 Our verdict
Thesys fills an important gap in the AI agent ecosystem: the ability to respond with a dynamic user interface rather than plain text. This approach, called Generative UI, represents a natural evolution of chatbots and AI assistants, which can now present data and results in the form of interactive tables, charts, or forms. Thesys’s main strength is its OpenAI compatibility: any existing application using the OpenAI API can migrate to C1 with minimal changes. The React SDK allows integrating generated components directly into a web application in just a few lines of code. The C1 Artifacts API adds another dimension by enabling real-time creation of structured documents (slides, reports). The pricing model is particularly attractive for startups: $10 in free credits to get started, then usage-based billing. The first 100 artifact pages per month are free. This freemium-to-pay-as-you-go positioning is well-suited for growing projects. Thesys primarily targets developers building next-generation AI agents, internal tools, or SaaS products that want to move beyond the limitations of text-only chatbots.
FAQ — Thesys
What is Generative UI?
Do you need a paid account to use Thesys?
Is Thesys compatible with Anthropic models?
What is the C1 Artifacts API?
Can you use Thesys without coding?
The API that converts the output of any LLM into living and adaptive user interfaces.