There are two types of taxis in Jeddah, the licensed yellow ones with a TAXI sign on them. They are cheaper though a little rougher with no air conditioning. They cost around $3-6 for a 10 minute ride. The other is white Limosine Taxi, which charges $1-3 more but are of a better quality. Its recommended to negotiate with the taxi for a fixed price before booking one as there can be instances of taxi being “lost”  resulting in extra payment.