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How Copilot Works

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Copilot evolution

Bing Chat launches

Feb 2023

Microsoft introduces AI chat in Bing, powered by GPT-4

Rebrand to Copilot

Nov 2023

Bing Chat becomes Microsoft Copilot with a standalone experience

Copilot Pro launches

Jan 2024

$20/month subscription for priority access and Copilot in Office

GPT-5 integration

Mid 2025

Copilot upgrades to GPT-5, adds Think Deeper and Voice for free

Copilot Pro discontinued

Oct 2025

Pro features folded into free tier; M365 Premium replaces it

Wave 3: Copilot Cowork

Early 2026

Copilot Cowork launches (powered by Claude Cowork technology), multi model intelligence, reduced Windows footprint

Current

2026

Free unlimited chat, Think Deeper, Voice, Copilot Cowork. M365 Premium for Office integration.

Where you can use Copilot

🌐
Webcopilot.microsoft.com. Works in any browser, no installation required.
🪟
WindowsBuilt into Windows 10 and 11 taskbar. Click the Copilot icon or press Win+C.
🧭
Edge SidebarAlways available in the Edge browser. Summarize pages, ask questions, compose text.
📱
Mobile AppsCopilot app on iPhone and Android with full chat, voice, and image features.
📄
Microsoft 365Inside Word, Excel, PowerPoint, Outlook with M365 Premium ($19.99/mo).
👥
TeamsSummarize meetings, draft messages, and catch up on conversations in Microsoft Teams.

What happened to Copilot Pro?

Microsoft discontinued Copilot Pro ($20/month) in October 2025. Most Pro features, including Think Deeper and priority model access, moved into the free tier. The only remaining paid Copilot feature is integration with Office desktop apps, which now requires Microsoft 365 Premium ($19.99/month).