OpenAI shared some text messages and emails to support their side of the Apple lawsuit. OpenAI opens with this:

Apple is one of the greatest companies of all time, and built a reputation for obsessing over the smallest details. This careless, aggressive and oddly personal lawsuit sadly doesn’t live up to that reputation.

Apple is clearly worried about OpenAI’s upcoming device. I remain skeptical of any company of Apple’s size using lawyers to stop a competitor.