One notable detail to emerge from the brewing legal battle between Apple and OpenAI isn’t about trade secrets at all — it’s about workplace culture and internal AI use.

In a series of iMessages released Tuesday as part of OpenAI’s public response to Apple’s trade secrets lawsuit against it, a former Apple engineer-turned-OpenAI staffer at the center of the case suggested that working at OpenAI was markedly different from working at Apple.

“This place is crazy… hahahah we use Ai all over the place,” Chang Liu said in a text message to one of his former Apple colleagues shortly after he left the iPhone maker earlier this year to join ChatGPT…