Shared taxis (beaten-up old green cars) cost a flat CFA300; flag them anywhere in town. They tend to follow set routes, often to/from the Grand Marché.
Allo Taxi A good alternative if you happen to be in a street without much traffic or would like to be picked up at a certain time or place. Taxis must be booked and they run on the meter. They are more expensive than green taxis.
Chartered taxis Hired for several hours at a time or a whole day, they will cost a minimum of CFA1500; negotiate before you set off.