OpenAI buys 20,000 Macs to train AI agents, saving $18M a month

OpenAI purchased tens of thousands of Mac minis and Mac Studios to train AI agents on realistic human-computer interaction tasks. The one-time ~$18 million purchase replaces an estimated $18 million in monthly rental costs, while demand pushed up prices and shipping times for high-memory Macs.

• About 20,000 Macs bought outright for roughly $18 million
• Renting the same fleet would cost ~$18 million per month
• macOS chosen for stability and Apple's licensing limits
• Mac mini price rose from $599 to $899 amid demand