Pi
pi.ai · Personal Assistants
Conversational assistant from Inflection designed to be a friendly, supportive thinking partner.
Pi is one of 9 personal assistant tools on Ryza. See all personal assistant tools or how we check facts.
Free
// guides
Guides that cover Pi
How to Use an AI Virtual Assistant, Step by Step
How to use an AI virtual assistant: pick the right type, give it context, connect email and calendar, schedule recurring tasks and keep approvals on.
Best AI Personal Assistant for iPhone in 2026
Compare the best AI personal assistant for iPhone in 2026: Siri AI, ChatGPT, Claude, Gemini, Pi, and Lindy over iMessage, who fits free use, work, and voice.
// related
Pi alternatives and related tools
ChatGPTchatgpt.comOpenAI's AI assistant. On paid plans its Mac app can record and summarize meetings, and any chat can transcribe uploaded audio into notes and follow up drafts.Personal AssistantsFreemiumHN 33
Raycastraycast.comMac and Windows launcher with built in AI chat, AI commands and hundreds of extensions for everyday workflows.Personal AssistantsFreemiumHN 5
Diadiabrowser.comAI browser from The Browser Company that lets you chat with your tabs and automate routine browsing.Personal AssistantsFreemiumHN 1
Alfredalfredapp.comKeyboard launcher for macOS that finds apps, files and web results, with a one time Powerpack for clipboard history, snippets and no code workflows.Personal AssistantsFreemiumHN 1
Lindylindy.aiNo code platform for building AI assistants that handle email, scheduling, meeting notes and other busywork.Personal AssistantsFreemium
Cometperplexity.aiPerplexity's AI native web browser with an assistant that can research, summarise and act across sites.Personal AssistantsFree