We introduced the Synthetic Interactive Persona Agent (SIPA) here in 2023 as a single construct with two distinct techniques bundled inside it: using a model to simulate a human respondent, and having an agent rephrase a question before it answers it. In the time since, the research literature has caught up and given each technique its own name, its own benchmarks, and — importantly — its own cautions. This is a refresh of the original idea against that contemporary work.
The cleanest way to understand SIPA now is as two engineered moves that share a persona scaffold:
- Simulation — instruct the model to
