Microsoft Copilot is a generative artificial intelligence chatbot developed by Microsoft AI, a division of Microsoft. Based on OpenAI's GPT-4 and GPT-5 series of large language models, it was launched in 2023 as Microsoft's main replacement for the discontinued Cortana.
Ranked #2 on "Top 10 Best AI Writing and Productivity Tools of 2025". Cast your vote to back or challenge this spot.
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“Top 10 AI Tools That Will Transform Your Workflow in 2026”
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