An old post by Elon Musk on X (formerly Twitter), in which he said "OpenAI is going to eat Microsoft alive", has resurfaced amid the global Microsoft outage on November 13.
Musk had posted the remark on August 7, 2025, in response to a post by Microsoft CEO Satya Nadella announcing the rollout of OpenAI's GPT-5 across Microsoft's platforms.
In his post, Nadella said GPT-5 would be available across Microsoft 365 Copilot, Copilot, GitHub Copilot and Azure AI Foundry. He described it as the most capable model yet from Microsoft's partners at OpenAI, highlighting its advances in reasoning, coding and chat.
Nadella also recalled the launch of GPT-4, which OpenAI CEO Sam Altman had demonstrated at Microsoft's headquarters in Redmond around two-and-a-half years earlier. He said the partnership had progressed significantly since then.
Responding to Nadella's announcement, Musk wrote: "OpenAI is going to eat Microsoft alive."