Your own ChatGPT UI — light, fast, open-source
Free to try, no sign-up required
80k-star open-source chat UI, pre-wired to AllRouter. No deploy, no keys — open and chat; switch models to compare answers.
A clean, fast chat client (86k stars) that normally needs you to deploy it and bring your own key. Here it is pre-wired, which makes it the easiest way to compare models side by side.
Free anonymous quota to try it. Register (free) for about 15× more. Or paste your own AllRouter key for unlimited use — it stays in your browser and is never sent to our server. Every run shows its exact cost, down to $0.0001.
How is this different from just using ChatGPT?
You can switch between DeepSeek, GLM, Kimi, Claude and GPT in the same interface and see the exact cost of each reply. It is a comparison bench, not a single-vendor product.
Are my conversations private?
Conversations live in your browser session. For sensitive work, self-host — the project is open source.
Can I keep using it after the free quota?
Register for a larger quota, or paste your own API key for unlimited use.
This page exists because NextChat is genuinely useful but takes real setup effort to run. We host it pre-configured so you can find out whether it fits your work before spending an afternoon on installation. If you like it, the source is right here — take it and self-host.