Cutting tool

A cutting tool comprising a base material and a coating disposed on the base material, wherein

• the coating comprises a hard particle layer,
• the hard particle layer is formed from a plurality of hard particles consisting of titanium, silicon, carbon, and nitrogen,
• the hard particle layer comprises a first region and a second region,
• the first region is a region sandwiched between a first main surface of the hard particle layer facing forward the base material and a virtual surface S1 at a distance of 0.5 μm from the first main surface toward the hard particle layer,
• the second region is a region sandwiched between a second main surface of the hard particle layer opposite to the first main surface and a virtual surface S2 at a distance of 0.5 μm from the second main surface toward the hard particle layer,
• a composition of the first region is Ti(1-Xb)SiXbCN,
• a composition of the second region is Ti(1-Xs)SiXsCN,
• the Xs and the Xb satisfy relationships of Xs-Xb≥0.01 and 0<Xb<Xs≤0.10,
• the hard particles have a cubic crystal structure, and
• in the hard particles, a concentration of the silicon changes periodically along a first direction going from the first main surface to the second main surface.