For text, they kind of already are.
Each agent was given a name, personality traits, a role such as conflict mediator or resource strategist, and an overarching goal for its “life” in a shared town... By the end, each simulated world had undergone its own shift in language. The world inhabited by copies of OpenAI’s GPT-5.5 model, for example, compressed speech, removing grammar and shortening messages. “Friendly voltage counted. If the handle needs your mouth, it dies anyway,” one message read.