Earlier this year, Microsoft CEO Satya Nadella moved with haste to get engineers to test and deploy DeepSeek’s R1 model on Azure AI Foundry. I understand Microsoft has been red teaming Grok 4 throughout July, a process where teams attack AI systems to find vulnerabilities or safety issues. I asked Microsoft to comment on its Grok 4 plans for Azure AI Foundry, but the company refused to provide a statement that’s attributable to a named spokesperson. Grok 4 availability on Azure AI Foundry is important to xAI, as it gives Elon Musk’s AI company direct access to Microsoft’s enterprise customers. It’s equally important to Microsoft, as the company is keen to position itself as the AI model hosting company.