Musk's xAI is adopting an on-site strategy, deploying engineers to potential clients' offices to compete for customers against OpenAI and Anthropic. Shift4 Payments decided to switch to xAI's Grok while retaining Anthropic's Claude. xAI's clients are primarily related to Musk's enterprises and government, a strategy that reflects a general trend in the AI industry where competitors are also deploying engineers to support clients.