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Microsoft Copilot

For the code completion tool, see GitHub Copilot.

Microsoft Copilot
Developer(s)Microsoft
Initial releaseFebruary 7, 2023 (2023-02-07)
Stable release(s)
WindowsJuly 2025 Update (1.25073.141.0) / 1 August 2025 (2025-08-01)[1]
macOS22.8 (Build 43072800.1) / 1 August 2025 (2025-08-01)[2]
Android30.0 (Build 43072900.3) / 29 July 2025 (2025-07-29)[3][4]
iOS30.0 (Build 43072900.3) / 30 July 2025 (2025-07-30)[5]

Microsoft 365 Copilot[a]
WindowsJuly 2025 Update (19.2507.59091.0) / 1 August 2025 (2025-08-01)[6]
Android16.0 (Build 19029.20122) / 28 July 2025 (2025-07-28)[7][8]
iOS2.99.2 / 25 July 2025 (2025-07-25)[9]
Operating system
Included with
PredecessorCortana
TypeChatbot
LicenseProprietary
Websitecopilot.microsoft.com Edit this at Wikidata (Personal)
m365copilot.com (Work/Education)
Copilot key (at center) on a Lenovo Legion 7i laptop. Starting in 2024, this key replaces the menu key for licensed Windows-compatible keyboards.

Microsoft Copilot (or simply Copilot) is a generative artificial intelligence chatbot developed by Microsoft. Based on the GPT-4 series of large language models, it was launched in 2023 as Microsoft's main replacement for the discontinued Cortana.

The service was introduced in February 2023 under the name Bing Chat, as a built-in feature for Microsoft Bing and Microsoft Edge. Over the course of 2023, Microsoft began to unify the Copilot branding across its various chatbot products, cementing the "copilot" analogy. At its Build 2023 conference, Microsoft announced its plans to integrate Copilot into Windows 11, allowing users to access it directly through the taskbar. In January 2024, a dedicated Copilot key was announced for Windows keyboards.

Copilot utilizes the Microsoft Prometheus model, built upon OpenAI's GPT-4 foundational large language model, which in turn has been fine-tuned using both supervised and reinforcement learning techniques. Copilot's conversational interface style resembles that of ChatGPT. The chatbot is able to cite sources, create poems, generate songs, and use numerous languages and dialects.

Microsoft operates Copilot on a freemium model. Users on its free tier can access most features, while priority access to newer features, including custom chatbot creation, is provided to paid subscribers under paid subscription services. Several default chatbots are available in the free version of Microsoft Copilot, including the standard Copilot chatbot as well as Microsoft Designer, which is oriented towards using its Image Creator to generate images based on text prompts.

  1. ^ "Microsoft Copilot". Microsoft Apps. Retrieved August 1, 2025.
  2. ^ "Microsoft Copilot". App Store. Retrieved August 1, 2025.
  3. ^ "Microsoft Copilot". Google Play. Retrieved August 1, 2025.
  4. ^ "Microsoft Copilot 30.0.43072900". APKMirror. July 29, 2025. Retrieved August 1, 2025.
  5. ^ "Microsoft Copilot". App Store. Retrieved August 1, 2025.
  6. ^ "Microsoft 365 Copilot". Microsoft Apps. Retrieved August 1, 2025.
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