CodexStudio

CodexStudio is an invite-only AI workbench for builders. It brings multiple model providers together in one chat-first interface so you can plan and ship real work without bouncing between tabs. ONE CHAT, MULTIPLE MODELS Switch any conversation between Claude, GPT/Codex, and local models (via Ollama) with a single tap. Each thread keeps its own provider choice, so a planning chat can run on Claude while a quick CSV transform runs locally. Streaming responses arrive token-by-token, just like the desktop client. WORKSPACES AND PROJECTS Organize your work by project. Pin the conversations you keep coming back to, archive the ones you don't, and surface the freshest threads across every workspace from a single search field. RUN ANYWHERE, SEE IT EVERYWHERE Start a long-running task from your laptop and the iPhone shows a live "working...s..." indicator with a one-tap stop. Finished runs trigger an Apple Push notification with the chat title so you don't have to babysit the app. CODE THAT READS CLEANLY Fenced code blocks are syntax-highlighted with the same atom-one-light palette the web client uses, so Swift, JavaScript, Python, Go, Rust, and a half-dozen other languages render the same on your phone as on your desktop. ATTACHMENTS Drop in screenshots, PDFs, or text files. Long-press anywhere in the composer for the system attachment menu, or drag-and-drop from Files on iPad. SIGN IN WITH APPLE Sign in with the Apple ID linked to your invited email. No passwords, no third-party identity provider — Apple handles the identity, CodexStudio handles the access. Silent re-auth on token expiry means you sign in once and stay signed in until you explicitly sign out. BUILT FOR PRIVACY CodexStudio is self-hosted and invite-only. You won't find it in App Store search; the only way in is a direct invite link from someone who already has access. Your chats are not used to train any model.