#define CTO OpenAI

The article's title is a play on the C/C++ preprocessor directive `#define`. It suggests that the role of CTO at OpenAI is being defined or redefined. The brevity and cryptic nature of the title are typical of Hacker News submissions, often relying on the reader's existing knowledge and context. Without further information, it's difficult to provide a deeper analysis. The title itself is the entire article.