Cluely is an AI-powered desktop assistant that runs invisibly on top of every meeting, interview, and call, listening to the conversation in real time and surfacing context-aware answers, talking points, and follow-ups directly on the user's screen without ever appearing on shared screens or in recordings. Originally launched in 2025 by Roy Lee after his viral Columbia University interview-cheating demo, Cluely has matured by 2026 into a full enterprise productivity platform with more than $20 million in ARR and a $30 million Series A led by Andreessen Horowitz at a $130 million valuation. The product now positions itself as 'the AI assistant for everything you do on a computer,' supporting live sales calls, customer success conversations, technical interviews, lectures, customer support, and one-on-one meetings. Cluely captures audio from both the microphone and system output, transcribes it in real time, and uses frontier large language models including GPT-5.1, Claude 4.5, and Gemini 3 Pro to generate suggested responses, objection handling scripts, follow-up questions, knowledge base citations, and post-meeting summaries. The Enterprise tier adds a knowledge agent that ingests internal documents, CRMs, and Slack channels so that suggestions are grounded in company-specific data, along with admin controls, SSO, audit logs, and zero data retention guarantees. Cluely is designed to remain invisible to screen-share, screen-record, and proctoring tools by rendering its overlay outside the captured window region, which has made it both controversial and one of the most rapidly adopted productivity tools in the AI-native workforce.