Gravity is often described as a force in everyday language, and historically, it was indeed understood as a force. However, in the framework of general relativity, our current theory of gravity, it is more accurate to say that gravity is not a force in the same way as the other fundamental forces (electromagnetic, strong, and weak forces) are described.
According to general relativity, gravity is a curvature of spacetime caused by mass and energy. Instead of a force acting between objects, the presence of mass or energy curves the fabric of spacetime, and other objects moving in that curved spacetime follow what we perceive as gravitational attraction.
In this sense, gravity is not mediated by particles in the same way as the other fundamental forces. The other forces are mediated by particles called gauge bosons (such as photons for electromagnetism or gluons for the strong force). However, a fundamental particle called the graviton is hypothesized to be the mediator of gravity in certain quantum theories of gravity, such as string theory. However, the graviton has not been experimentally detected yet, and its existence is still theoretical.
It is important to note that there is ongoing research and exploration in the field of quantum gravity to reconcile general relativity with quantum mechanics and provide a more complete understanding of gravity at the fundamental level. But at our current understanding, gravity is best described as the curvature of spacetime rather than a force mediated by particles.