"At the cutting edge" is a phrase that describes something that is innovative, pioneering, and ahead of the curve. There are several synonyms that can be used to convey the same idea. For instance, "state-of-the-art" describes technology that is cutting edge and not yet widely available. "Leading-edge" describes something that is at the forefront of development or innovation. "Frontier" and "vanguard" can also be used to describe something that is at the cutting edge, suggesting a forward-looking and pioneering spirit. Other phrases include "revolutionary," "groundbreaking," and "trailblazing." These synonyms are useful for creating diverse writing that avoids repetition and keeps the reader engaged.