Microsoft Copilot

Microsoft Copilot is a generative artificial intelligence chatbot developed by Microsoft AI, a division of Microsoft. Based on the Microsoft Prometheus large language model, it was launched in February of 2023 as Microsoft's main replacement for the discontinued Cortana from Windows 10. The service was introduced in February 2023 under the name Bing Chat, as a built-in feature for Microsoft Bing and Microsoft Edge but would later be integrated into Windows and Microsoft 365 under various names. Over the course of 2023, Microsoft began to unify the Copilot branding across various chatbot products, cementing the "copilot" analogy. Microsoft introduced the Microsoft 365 Copilot app in January of 2025, which was a rebranded version of the Microsoft 365 app. The application works differently than the consumer version of Copilot, being centred more on work, business and education users. Copilot uses the Microsoft Prometheus model, built upon OpenAI's GPT large language models, which in turn have 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.…

Microsoft Copilot is a generative artificial intelligence chatbot developed by Microsoft AI, a division of Microsoft. Based on the Microsoft Prometheus large language model, it was launched in February of 2023 as Microsoft's main replacement for the discontinued Cortana from Windows 10. The service was introduced in February 2023 under the name Bing Chat, as a built-in feature for Microsoft Bing and Microsoft Edge but would later be integrated into Windows and Microsoft 365 under various names. Over the course of 2023, Microsoft began to unify the Copilot branding across various chatbot products, cementing the "copilot" analogy. Microsoft introduced the Microsoft 365 Copilot app in January of 2025, which was a rebranded version of the Microsoft 365 app. The application works differently than the consumer version of Copilot, being centred more on work, business and education users. Copilot uses the Microsoft Prometheus model, built upon OpenAI's GPT large language models, which in turn have 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. Said users on its free tier can access the vast majority of it’s features, while priority access to newer features, including custom chatbot creation, is provided but limited 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. On October 23, 2025, Microsoft announced major changes to the consumer version of Copilot, which included the introduction of Mico, an assistant character which acts similarly to Microsoft's old assistant character Clippit. Copilot also became fully built-in to Edge as an opt-in experience and an upgraded user interface in Windows 11 was introduced, making Copilot more personal. All these changes were made to give Copilot "a personality and identity". In November 2025, Microsoft announced that Copilot would be discontinued on WhatsApp and other third-party messaging platforms, with support ending on January 15, 2026. The change followed updates to platform policies affecting third-party chatbot integrations on messaging services. In March 2026, Microsoft announced in-chat experiences for partner applications in Microsoft Copilot, including Adobe Express, Adobe Acrobat, Base44, Box, Canva, Coursera, Figma, Miro, Monday.com, Optimizely, and Wix. These partner app experiences are available through the Microsoft 365 Agent Store. In August 2026, Microsoft announced it would be merging the consumer version of Copilot with M365 Copilot to create a new application. The new Copilot would be similar to MS365 Copilot, with added features from the consumer version of Copilot. Mico, Deep Research, group chats and other features would be removed. Past versions (Archive1, , Archive3, Archive4)

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