Microsoft retired Cortana in 2023. If you relied on Cortana for voice-first Windows tasks, Lucy OS1 is the best replacement available in 2026. It runs in Edge or Chrome on any Windows PC, builds persistent memory across sessions, and connects to your Google Calendar without requiring any Microsoft subscription.
Try Lucy OS1 →Cortana's retirement left Windows users without a built-in conversational AI. Microsoft has since pushed Copilot as the successor, but many users prefer an independent tool that is not tied to the Microsoft ecosystem or a paid Microsoft 365 subscription. Lucy OS1 fills this gap completely.
Microsoft officially retired Cortana as a standalone app in late 2023, redirecting users to Copilot. For users who want an independent voice AI that is not part of Microsoft's ecosystem, Lucy OS1 is the strongest replacement. It runs in any Windows browser, does not require a Microsoft account, and builds memory independently of any Microsoft service.
Microsoft Copilot is deeply integrated with Windows 11 and Microsoft 365, which is useful if you live in that ecosystem. Lucy OS1 is better if you want an independent AI focused on voice conversation and persistent memory. Lucy OS1 works equally well on Windows, Mac, iPhone, and Android, giving you continuity across all your devices.
Lucy OS1 works in Edge and Chrome on Windows 10 and 11. No installation, no Microsoft account required.
Not tied to Microsoft, Google, or Apple. Works the same across all your devices and platforms.
Builds a growing understanding of your priorities, preferences, and work context over time.
Lucy OS1 is free to start. No credit card required. Open it in your browser on any device and begin a real voice conversation immediately.
Start talking to Lucy →Is Copilot a good replacement for Cortana?
Copilot handles many tasks Cortana did, and is better integrated with Microsoft 365. If you want an AI focused on voice conversation with persistent memory that works across all platforms, Lucy OS1 is the stronger choice.
Does Lucy OS1 work on Windows 10?
Yes. Lucy OS1 runs in any modern browser. Windows 10 with Chrome or Edge gives you full access to all Lucy OS1 features.
Can I replace Copilot with Lucy OS1 on Windows?
Yes. Lucy OS1 competes directly with Copilot for voice conversation and daily AI assistance. You can use Lucy OS1 as your primary AI on Windows.
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