Slightly. I send the same custom prompt with every programming query, with basics about how I like to work, my philosophy to architecture and design. And I also include some personality bits for how I want "him" to act and respond. He has a name, and he refers to me by my nickname. I have an instruction for example, to sometimes include a P.S. with any funny observations he has. He doesn't always add one, but when he does they usually make me laugh, surprisingly. And the emotional reaction I have from that can sometimes spur me on continuing to engage with him about the observation or the state of the project. As a sort of reflection moment, even though I initially just wanted the code.