Microsoft reportedly plans to begin using Anthropic's latest Claude models to power some of the Copilot features in its Office 365 apps. In a report published Tuesday, The Information said the tech giant would announce the change "in the coming weeks." Microsoft currently relies on OpenAI's tech to power the majority of AI features found inside of Word, Excel, Outlook and PowerPoint.As an outsider looking in, Microsoft's embrace of Anthropic's models would appear to signal a deepening split between the company and OpenAI. Microsoft is the AI lab's largest investor, and was integral to Sam Altman's rehiring as CEO following his brief ouster in 2023. However, in recent months reports of a growing impasse between the two in negotiations over OpenAI's plan to restructure its for-profit division as a public benefit corporation have bubbled up.For its part, Microsoft denied the move is motivated by animosity. "As we've said, OpenAI will continue to be our partner on frontier models and we remain committed to our long-term partnership," a company spokesperson told The Information.Still, the decision likely comes as unwelcome news for OpenAI. The Information reports Microsoft is at least partly motivated by the fact it believes Claude 4 Sonnet "performs better in subtle but important ways" than GPT-5. For example, The Information's source said Anthropic's model tends to generate "more aesthetically pleasing" PowerPoint presentations. Notably, that's coming from an older model, and one that isn't even Anthropic's flagship offering.Anthropic did not immediately respond to Engadget's comment request. According to The Information, Microsoft does not plan to charge more for access to Anthropic models in Office 365, with Copilot pricing set to remain at $30 per user per month. That's notable because the company will pay Amazon to access Claude Sonnet 4 through AWS, Anthropic's primary cloud provider. As part of its investment in OpenAI, Microsoft can access the company's models at no additional cost.This article originally appeared on Engadget at https://www.engadget.com/ai/microsoft-reportedly-plans-to-start-using-anthropic-models-to-power-some-of-office-365s-copilot-features-202017205.html?src=rss

Microsoft is taking inspiration from the AI-driven workflows of "vibe coding" and has now set out to make "vibe working" a thing (yes, those are the words the company chose.) Does AI in the workplace even lead to worthwhile outputs? Does it mortgage our brains' ability to learn? There are many seemingly critical question unanswered. But in the meantime, sure: vibe working it is.Using Office Agent within Office apps or Copilot chat, users can begin a document with a single prompt and then work iteratively alongside Copilot to develop a finished product. Microsoft says this is the "new pattern of work for human-agent collaboration." The Agent Mode tool supports Excel and Word workflows, and Microsoft says PowerPoint support is coming soon; Office Agent works with PowerPoint and Word, with Excel coming soon.The company waxes poetic about the "full power of Excel" being available only to expert users and promises that an Agent Mode that can "speak Excel" will change all that. In data shared as part of the announcement, Microsoft said that Copilot Agent Mode in Excel achieved 57.2 percent accuracy on the SpreadsheetBench benchmark. This is compared to a 71.3 percent human score, though it's not clear if that's for average users, Excel power users or how many human users that score is derived from. Still - not great numbers!Agent Mode also works in Word to summarize, edit and of course help to create entire drafts (though its unclear what those relative accuracy rates are.) Both the Excel and Word Agent Modes are powered by OpenAI's latest models. Office Agent in Copilot chat is powered by Anthropic models and can create PowerPoint presentations and Word documents in what Microsoft calls a "chat-first experience."Agent Mode for Excel and Word, as well as Office Agent, are available today through the Frontier program. Agent Mode is currently limited to the web-based versions of Word and Excel and is coming to desktop soon.This article originally appeared on Engadget at https://www.engadget.com/ai/microsoft-is-trying-to-make-vibe-working-a-thing-163334367.html?src=rss