The accuracy of laser cutting services depends on the method of laser cutting used to perform the cutting operations. The gas laser cutters will give you the least accuracy. The crystal laser cutting method can give you better accuracy. But if you are looking for the highest accuracy, you should opt for a fiber laser cutter.
Since most laser cutting service providers use gas laser cutting, they can offer a dimensional accuracy of ±0.12 mm to ±0.18 mm. On average, you can expect a kerf diameter of 0 mm to 0.24 mm.