When were the ancient Greek Sophists most influential?

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Detail from School of Athens by Raphael — Sophist Plato (center left) and Aristotle, detail from *School of Athens*, fresco by Raphael, 1508–11; in the Stanza della Segnatura, the Vatican. Plato is shown pointing to the heavens and the realm of forms, Aristotle to the earth and the realm of things.

The ancient Greek Sophists were most influential during the 5th century BCE, serving as the primary providers of higher education in advanced Greek cities for approximately 70 years until about 380 BCE.1

During this period, they centered their activities in Athens, where the city's democracy created a high demand for their services. Because political success in Athens increasingly depended on one's ability to persuade audiences in the council and assembly, the Sophists became essential for teaching rhetoric and public speaking.1

While they are often associated with political training, their influence extended to a broad curriculum that included grammar, mathematics, music, and the physical sciences. By the early 4th century BCE, their role as the sole providers of higher education began to diminish as they were largely replaced by new philosophical schools, such as those established by Plato and Isocrates.1