Microsoft Copilot Becomes a Multi-Model Buffet Across Six Surfaces

One announcement put both Claude Opus 5.5 and GPT-6 Sol into Word, Excel, PowerPoint and beyond — with enterprise policy controls to govern which model runs where.

Microsoft rolled Claude Opus 5.5 and GPT-6 Sol across six Copilot surfaces in a single announcement, as @FlowAltDelete detailed, spanning Word, Excel, PowerPoint and other productivity apps. The significance is that Microsoft is no longer betting on one lab. Enterprise users now get model choice between Anthropic and OpenAI inside the same suite, selected per task and governed by admin policy.

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