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Thursday, July 9, 2026Scoutari
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Wed, July 800:19Model/APIAPI & pricingInfra & costEnterprise AI

Microsoft Replaces OpenAI and Anthropic Models with In-House AI in Some Apps

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Decision Brief

What changedTo cut AI costs, Microsoft has started replacing OpenAI and Anthropic models with its own in Excel, Outlook, and other products.
Why it mattersEnterprise Office 365 users may see AI features shift to private models, with potential changes in experience and pricing.
Who should careTeams building on model APIs
Affected stackClaudeOpenAI
Source confidenceMedium · Reliable media or first-hand reporting

According to Bloomberg, Microsoft has begun replacing AI models from OpenAI and Anthropic with its own in-house models in software like Excel and Outlook to reduce AI costs. This move indicates Microsoft's gradual shift away from dependence on external AI providers toward internal development. For enterprise users relying on AI features in Microsoft Office 365, there may be functional changes or a transition period. Developers using OpenAI or Anthropic APIs should watch for Microsoft's subscription strategy changes that could affect pricing and availability.

Summary basis: official / RSS sourceCompiled from the source scope noted above; the original remains authoritative.

Sources

  • Bloomberg:Technology

    Market-moving AI company, regulation, funding, and enterprise news.

  • Bloomberg:Technology

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