C1 by Thesys is a Generative UI API that augments LLMs to respond with interactive UI like charts, forms, cards, and more in real-time, instead of plain text. It integrates seamlessly with any LLM, framework, or MCP in just 2 lines of code. Ship rich, interactive AI apps 10x faster with 80% less UI overhead.
This is the 3rd launch from Thesys. View more

C1 Artifacts API
Let your users generate interactive slides and reports right within your AI app, fully on-brand. Easy to create and edit with prompts, and share with a link. Integrate in just 3 steps or try it as an MCP in your favorite AI app.






Free Options
Launch Team / Built With







Thesys
👋🏻
Hey folks, Parikshit here, co-founder of Thesys.
Last month, we launched C1 Generative UI API, and the response genuinely blew us away. Thousands of developers signed up, started building AI apps with us, and pushed C1 into production faster than we imagined.
So today, we’re excited to ship the next big step in that vision:
Introducing
C1 Artifacts API
Build AI apps that can generate Slides & Reports.
The problem :
Today, your users are stuck app-hopping: They pull insights from your product, switch to ChatGPT to summarize, then move everything into Google Slides or PowerPoint and spend hours creating slides & reports to share with their team. It’s slow, manual, and breaks the workflow.
Solution :
C1 API for Artifacts solves this. Your users can now create beautiful and interactive Artifacts:
✦ Slides with aesthetic layouts and visuals
✦ Reports with interactive charts and summaries
And refine everything with follow-up prompts. Fully on-brand. Instantly shareable.
For example :
✦ If you’re building a sales copilot, your users can instantly generate a quarterly business review deck or pipeline analysis report.
✦ If you’re building a support agent, your users can instantly create ticket trend reports or SLA performance slides.
✦ If you’re building an edtech AI tutor, your students can instantly consume engaging slides about world population trends or climate change reports.
C1 API for Artifacts lets your AI app actually get work done, not just output text. Your users stay in your product. And you save months of engineering on UI, layouts, exporting, and theming.
Integrate in 3 simple steps :
1️⃣ Initialize the client
2️⃣ Make a generation request
3️⃣ Render with our SDK
Or try it as an MCP inside your favorite AI apps like ChatGPT, Claude, Cursor, etc.
🎁 Launch bonus: Get up to 5M free tokens for early signups today.
❤️ Try it here: https://thesys.dev/artifacts
Excited to see what you build - your feedback will shape what we ship next.
@pgd the level of craft is impressive. keep up the great work 👏👏
Thesys
@fmerian Thanks a ton :D
Sprinto
@fmerian @pgd congrats on the launch, very cool.
Swytchcode
This is awesome! Does the app also allow the team mates to collaborate on the slides and reports?
Congrats on the launch!
Thesys
@chilarai Great suggestion! We’ll add that to our roadmap.
curious what else do you have on your roadmap? @pgd
Thesys
@fmerian Our top priority is to deliver the download functionality for generated reports and slides.
@Thesys coined a new prompt instruction: "be visual." love it!
Triforce Todos
This is going to save teams countless hours every single week. Do you support interactive embeds like charts that update with new data?
Thesys
@abod_rehman For interactive embeds, we recommend using C1 API Embed instead of C1 Artifact APIs
Check out our docs here - https://docs.thesys.dev/guides/what-is-thesys-c1
Checkout demo dashboard powered with C1 - https://analytics-dashboard-with-c1.vercel.app/
Shadow
Congrats on the launch!
@jaythesong thanks for the support, Jay—spread the word on X!
Looks super interesting, looking forward to using it! Congrats on the launch!
Dualite
Congrats on the launch!