Microsoft Confirms Its Own AI Models Now Handle Excel Work OpenAI's Once Did

Link CopyTwitterLinkedinWhatsappMicrosoft Confirms Its Own AI Models Now Handle Excel Work OpenAI's Once DidTwo weeks ago the company declined to comment on the switch. On 23 July it published the numbers.Microsoft has put its own AI models into Excel and Outlook in place of some of the OpenAI and Anthropic models that used to run those features, and on 23 July it published production figures defending the swap. Its in-house model in Excel is "on par with GPT-5.6 for the most common tasks", the company says, while carrying roughly 5 billion active parameters. Microsoft holds about a quarter of OpenAI, resells its models through Azure, and has now started publishing the comparison against them.The switch was reported before it was confirmedAbout The AuthorAt heart, I am a storyteller drawn to the watershed moments that bend the technology landscape. I braid narrative with data, humanise statistics, and trace the arc from first spark to world-changing impact. My reportage, features and reviews are witty, sardonic, visual and vivid, using anecdote to illuminate rather than eviscerate.

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