Microsoft has chosen GPT-5.6 as the preferred model for its 365 Copilot tool. This means that the tool will use the latest version of OpenAI's GPT-5.6 language model to improve performance across various applications, including Word, Excel, PowerPoint, and others. The updated model is expected to provide stronger AI capabilities, leading to faster and higher-quality work. --- Why it matters: This change matters because it shows how large companies are adopting the latest advancements in natural language processing to improve their tools and services. Engineers working on similar projects can learn from Microsoft's decision-making process and consider implementing similar upgrades to enhance their own applications' performance. Source: https://openai.com/index/gpt-5-6-preferred-model-microsoft-365-copilot