The phrase "are required less" is grammatically correct and can be used in written English.
It is typically used to indicate that something is needed to a lesser extent than before or compared to something else.
Example: "In the new system, manual inputs are required less than in the previous version, making it more efficient."
Alternatives: "are needed less" or "are demanded less".
They can get cheaper parts and service at a local mechanic (though cars are so well built these days that repairs are required less frequently).
Because it leaves no carbon deposits inside the engine, wear is reduced to a minimum and oil changes are required less often.
As a result, blood samples are required less frequently, which in turn, contributes to a lighter workload for nursing staff and lower operational costs.
By convention, the term vitamin includes neither other essential nutrients, such as dietary minerals, essential fatty acids, or essential amino acids (which are needed in greater amounts than vitamins) nor the great number of other nutrients that promote health, and are required less often to maintain the health of the organism.
All told only six neurons are required, less than in the place coding scheme.
Devices are requiring less power but there will be, as ever, more devices.
Wetlands with lower trapping rates would also have lower maintenance costs, as dredging would be required less frequently.
In these areas, the prevalence of cataract episodes might be higher, but the average cost would be lower because surgery is required less frequently.
Unplanned stents were required less often in patients treated with abciximab and low-dose, weight-adjusted heparin than in patients receiving placebo and standard-dose heparin (9.0% versus 13.7%; P=.001).
In some patients, this may have the benefit of apheresis being required less frequently.
Vasopressor therapy was required less frequently and in smaller doses when etomidate was used to induce anaesthesia.
