Models keep getting smarter. But the harness doesn’t disappear. Instead, its job shifts from making decisions for the model to giving it options. In Replit A

Models keep getting smarter. But the harness doesn’t disappear. Instead, its job shifts from making decisions for the model to giving it options. In Replit Agent, the main agent decides when to think harder, when to hand work to a subagent, and how much effort that subagent should spend.