The Big Five is a popular alternative to Myers Briggs Type Indicator and the 16 Personalities model has been changed to resemble the Big Five more and more in later days.
Some people have even added the -A/T to their type code, for example calling themselves INFJ-A or ESTJ-T types, describing whether they are Assertive or Turbulent people.
The Five Scales of the Big Five
A scientific method for classifying personality types, focusing on measuring and classifying easy to measure behaviour.
A measurement on how outgoing you are. In the Myers Briggs, the more Introverted you are, the more likely you are to be reserved. The more Extroverted you are, the more likely you are to be Outgoing.
Openness types are typically strong in iNtuition. Those that are lower in openness tend to be more traditional. Traditional types are stronger in Sensing.
Agreeableness is a scale of how cooperative or collaborative you are. Feeling types tend to be more agreeable. Thinking types less agreeable.
Conscientious types are typically stronger in Judging while less Conscientious types are typically more Perceiving.
Openness types are typically strong in iNtuition. Traditional types are stronger in Sensing.
An INTP-T then is someone Reserved, Open-minded, Disagreeable, Messy and Turbulent. An ESFJ-A is someone Outgoing, Traditional, Agreeable, Conscientious and Assertive.
However, the Big Five is also different in that they measure the strength of a preference. While in the MBTI, all Extroverts are grouped together despite the fact that some Extroverts are obviously more extroverted than others.