Open Chat Updates

Pull requests can now be previewed on dedicated pr-{number}.osschat.dev environments, making it easier to review changes before merging. GitHub sign-in is supported in these previews by routing OAuth through the production Convex site, and preview domains are explicitly allowed so authentication requests work reliably.

This release simplifies how “Thinking” content is shown by using one unified view for both reasoning and tool steps, and it removes the old Chain of Thought toggle. It also fixes several web search issues, including keeping completed tool steps expanded, correctly counting search usage, and improving how chats restore these details after reload.

This release reduces login-related UI glitches by showing a brief loading screen while authentication initializes, helping prevent server and browser rendering from getting out of sync. It also adds a server-side migration you can run to clear stored auth keys when rotating your auth setup, resolving key decryption errors caused by stale data.

Fixed a production sign-in issue caused by CORS preflight responses missing the required origin header. Better Auth routes now explicitly allow requests from the app’s supported domains, so browser-based authentication works reliably on osschat.dev and the beta site.

The app now runs on a fully rewritten TanStack Start (Vite) frontend, replacing the previous Next.js experience. This update also moves sign-in to Better Auth with GitHub OAuth and standardizes chat AI access on the OpenRouter SDK, with an optional account connection for higher limits.

Authentication now uses Better Auth with GitHub OAuth, so signing in is simpler and sessions work consistently across refreshes and server-side requests. This release also adds daily search usage limits and persists tool activity and reasoning-related UI so chats render more reliably after reloads.

Stopping a response now updates the interface immediately and also cancels the active request on the server, so generation does not continue in the background. This release also refines reasoning display, including support for showing reasoning above the answer and indicating when reasoning was requested but not returned.

This release applies critical security fixes by updating key web dependencies to address multiple reported vulnerabilities. It mitigates risks including remote code execution, denial of service, and potential source code exposure, helping keep your data and sessions safer.

Reasoning settings are now easier to find and adjust, with a new popover and clear preset levels including Low. Reasoning can also be enabled across supported models based on your selection, and mandatory reasoning detection is now limited to OpenAI o1 and o3 models for more accurate behavior.

A new Sponsors Box is now available on the desktop dashboard, showing sponsor links with short descriptions on hover. You can dismiss it with a single click, and it will stay hidden in future sessions, keeping your workspace tidy while still making sponsor info easy to find when you want it.