GroupGPT Build Journal
A running log of what shipped, what changed, and why. Every feature, fix, and architectural decision — documented as it happened.
Thirty days of shipping — Google OAuth to Firebase, private rooms to WebLLM, and everything in between.
The custom JWT/Passport system moves to Firebase Authentication, disposable emails are blocked at signup, admin routes get rate limiting, and invite links become multi-use with user-controlled expiry.
Read post →WebLLM no longer re-downloads the 1–2 GB model on every page load thanks to origin-private file system cache detection, and room logos move from data URLs to properly stored database paths.
Read post →GroupGPT ships full AI inference in the browser using WebLLM and WebGPU/WASM — an AI group chat that works with no server, no API key, and no internet connection. Plus a critical fix for mobile IP ban false positives.
Read post →image! Command & Prompt HistoryNeurons become portable with a .neurons JSON bundle format for sharing AI context packs, the image! command generates inline images, and a Prompt History tab lets users review and edit logged AI interactions.
Read post →Scaffold file metadata is now persisted to the database so code previews survive page reloads, and the code! command gets a 32K token cap for much longer code generation in private rooms.
Read post →The second major architectural expansion: 2,400+ lines of new frontend code introduces WebRTC voice chat, voice memo transcription, the NeuronPanel AI context editor, code scaffold generation, and Tavily web search.
Read post →Every teal accent is replaced with GroupGPT's brand purple, admins gain a right-click message correction UI for training signal, and mobile layout gets dvh viewport fixes for iOS Safari.
Read post →Users can now go invisible with Ghost Mode, the AI thought-mode pipeline is fixed to correctly thread message types, and chat history can be re-imported into rooms to prime the AI with prior conversation context.
Read post →Cortez gets its own RSA-OAEP keypair so the AI can actually read encrypted messages, ciphertext is excluded from AI history, and E2EE history survives page refreshes via corrected load ordering.
Read post →GroupGPT switches to Gemini 2.5 Flash with 32K token context, ships per-room AES-GCM end-to-end encryption using the Web Crypto API, and launches an admin dashboard for user management.
Read post →Users get unique @usernames enforced at the DB level, rooms get shareable slugged URLs like /r/username/room-name, and room owners gain email whitelist controls — turning GroupGPT rooms into addressable places on the internet.
Read post →The newly-built RoomSidebar receives its first round of UX fixes — portal rendering corrections, responsive modal sizing with min() CSS expressions, and stale activeRoomId state cleanup for fast room switching.
Read post →The biggest commit of the month — 2,188 lines of new backend code introduces persistent private rooms with DB backing, a complete invite token system, real-time per-user translator mode, and full room member management.
Read post →A concentrated branding pass replaces placeholder UI with GroupGPT's real visual identity — new wordmark logo, full favicon suite for all platform sizes, and League Spartan typography applied to the auth page.
Read post →GroupGPT drops email/password login and switches to Google OAuth as the sole sign-in method via Passport.js, adds a protected admin subscription upgrade endpoint, and cleans up SQLite database hygiene.
Read post →Ready to try GroupGPT?
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