Microsoft is now letting business users pick between OpenAI and Anthropic models inside its Copilot AI assistant. This started on Wednesday. It’s the first time Microsoft is giving customers direct access to Anthropic’s models in its workplace AI system. Before now, Copilot was entirely run on OpenAI tech like GPT-4. Now, Microsoft 365 Copilot and Copilot Studio will also include Claude from Anthropic.