Q: What is Noi and why is it useful? A: Noi is a desktop GUI app that brings multiple AI services like ChatGPT, Claude, Gemini, and Perplexity into a single interface. Learning how to use Noi AI app helps reduce tab switching by using tabs, session isolation, prompt management, and a built-in terminal. Q: How do I install Noi on my computer? A: Noi runs on Linux, macOS, and Windows and you can download an installer from the official Noi releases page. To begin learning how to use Noi AI app, run the installer and open Noi like any other desktop application. Q: How do I add services like ChatGPT or Gemini to Noi? A: Click the small link icon at the top-left of the sidebar, give the service a name, and paste its URL (for example https://www.chatgpt.com) to add it. After saving, the service appears as a pinned entry you can open in a tab and use immediately, which is a core part of how to use Noi AI app. Q: What are Spaces in Noi and how do I create one? A: Spaces are user-created groups of services that let you keep tools organized by task; the sidebar starts as your default Space. To create a new Space, click the Spaces icon in the bottom toolbar, click +, name it, click Save, and then add services manually by URL to populate that Space. Q: Can I use my local AI models inside Noi? A: Yes — Noi includes a built-in terminal for running local commands and can open local web UIs as tabs, so you can use command-line tools like an Ollama CLI or add a local WebUI URL such as http://192.168.1.25:3000. Using the terminal or local web UI is part of how to use Noi AI app when you want local-first models and workflows. Q: How does Noi handle session isolation, history, and prompts? A: Noi supports session isolation so tabs can keep conversations and cookies separate, and it stores history and saved prompts locally by default. You can use the prompt manager to save and reuse instructions for consistent outputs. Q: What should I do if a service in Noi shows a permission error or fails to load? A: If a tab shows a permission error or fails to load, close the tab and reopen it from the sidebar and sign in if the service requires an account. If the issue continues, try opening the service in a new Space to isolate the session. Q: Who benefits most from using Noi and what workflows does it support? A: Noi is useful for writers, researchers, and developers who switch between chat, search, coding tools, and local models, as it groups tools into task-focused Spaces. Its multi-window support, themes, and local-first storage help build workflows for research, coding, or writing without constant browser tab switching.