How did slaves in Ancient Greece differ from models of slavery in later societies?

In Ancient Greece, slaves were employed in several positions in society, and they were scattered rather than condensed in labor groups. Since racism is basically a recent social construct, in Ancient Greece slavery was not really based on race like in most recent times, it was more a thing of putting war criminals, pirates and war enemies up for the slave market; besides, in Ancient Greece slaves were also allowed to indulge in many cases.

How did slaves in Ancient Greece differ from models of slavery in later societies?

Answer - Slavery was not connected with race in the ancient world. People were slaves because their side lost a recent war or as punishment for a crime (something still theoretically allowed in the US). They were not necessarily of a different race to the slave owners.

People didn't necessarily see slaves as inferior. Slaves were sometimes employed as secretaries and tutors and it was prestigious to own an intelligent, educated, slave.