Because terabits are ambiguous and misuse the prefix "tera" as defined by the International System of Units, the International Electrotechnical Commission established tebibits in 1998.
A tebibit is always equal to 2^40, or 1,099,511,627,776 bits or 1024 gibibits.
As a unit of measurement, tebibits have no practical uses as of today.
Tebibits are 1,024 gibibits and precede pebi, exbi, zebi and yobi in bit measurement.
Very similar to terabits, which use a less exact prefix established by the International System of Units (SI) but are used much more commonly.