  Card et al.'s classic paper "The Design Space of Input Devices" established
the value of design spaces as a tool for HCI analysis and invention. We posit
that developing design spaces for emerging pre-trained, generative AI models is
necessary for supporting their integration into human-centered systems and
practices. We explore what it means to develop an AI model design space by
proposing two design spaces relating to generative AI models: the first
considers how HCI can impact generative models (i.e., interfaces for models)
and the second considers how generative models can impact HCI (i.e., models as
an HCI prototyping material).
