How did a Hellenistic city differ from a Greek polis?

Hellenistic cities differed from traditional Greek poleis primarily in their cosmopolitan character and administrative structures. While Greek poleis were often small, self-governing city-states focused on local governance and community identity, Hellenistic cities, founded after Alexander the great's conquests, were larger and more diverse, blending Greek culture with local traditions. These cities typically featured centralized governance under royal authority, extensive urban planning, and a greater emphasis on trade and cultural exchange, reflecting their role as hubs of the broader Hellenistic world.