Hey guys,
I wanted to share an open-source chat app that we built last week as part of the T3 Clone Competition. It’s a minimal AI chat app inspired by t3.chat, with most of the core features replicated:
- Google + Anonymous auth with chat linking
- Multi-model support (OpenAI, OpenRouter)
- Real-time updates with Convex
- File uploads (PDF, image, text)
- Chat branching and shareable threads
- Syntax highlighting, markdown support
- Bring-your-own-key support (keys never touch the server)
The branching + share feature was the trickiest—it required snapshotting and spinning up isolated threads when someone replied to a shared chat.
You can try it live at 👉 https://ch4t.codse.com
And the source code is open at 👉 https://github.com/codse/chat
Not perfect (still missing image generation and smoother streaming), but it was a fun deep dive into real-time UX.
What do you think? What would you improve or build next?
I’d really appreciate it if you took a moment to give it a ⭐ on GitHub!
Top comments (0)