What was the first commerically available computer processor?

The first commercially available computer processor was the Intel 4004. It was introduced in 1971 and considered a groundbreaking achievement in the field of microprocessors. The 4004 was a 4-bit central processing unit (CPU) and comprised 2,300 transistors. Intel's creation of the 4004 revolutionized computing by bringing processing power to small-scale devices and providing the foundation for modern microprocessors.