To steal from the Hosidius Stalls is a requirement with OSRS Fire Cape for 15% approval from the Hosidius home. Expect 40K EXP per hour If you don't keep those stolen Fruits.

From the 25th to the 45th levels Thieving

Stolen goods from Hosidius Stalls (Fruit Stalls) is the most effective way to get to the level 45 of thieving. The Fruit Stall in the Hosidius House Square and there are two dogs in the vicinity. You must lure the dogs and keep them inside any structure to be able to get the highest amount of ExP for thieving per hour.

From level 45 to 55 Thieving

The most efficient method of enhancing your Thieving skills from 45-55 is using Blackjacking. This is unlocked after finishing the Feud quest that also grants 15K Thieving ExP after completing it.

This is a method that requires a lot of clicks yet it provides the highest level of thieving EXP in these levels. When you reach level 45. You will need to begin Blackjacking with the bearded bandits of Pollnivneach City.

This is done by tricking one into a house so that they won't be seen by other Bandits. You must knock him out one time then pickpocket him two times and repeat.

If you are unable to defeat him you'll need to either use the Knock-out feature to stop his plan to kill you, or walk away from the home and come back for him to be knocked out a second time. In order to knock them out, you have to possess at least a Blackjack or any other type inside your weapon slot.thieving inside houses in the city of gielinor

Make sure that you have all your inventory filled with food and empty slots to stop him from pickingpocketing the thief without knocking him out first. This is if you're not worried about money and would like the highest possible level of Thieving EXP. The damage will be incurred if you don't eliminate off the Bandit out, which is why taking food items will be essential.

Expect at least 50K of EXP/Hour for thieving as high as 80K+ if you've got quick fingers.

From level 55-65 Thieving

When you have reached the level of 55 Thieving, you'll be able to begin Blackjacking the non-bearded Bandits within Pollnivneach City. This is similar to you would do with the Bearded Bandits method, as you simply lure them into any home to begin taking them out. This will bring you close to achieving level 65 quickly however you could be injured in the fingers.

Like the non-bearded approach it is recommended to have food in your inventory that has no empty slots to get the most EXP per hour, with no OSRS Gold gain.

Starting at Level 65. you can go up to Level 99.

Pickpocketing Ardougne Knights is the best option to get to the highest level of Thieving that is 99. This isn't AFK however, you'll need to click at that Ardougne Knight until you've reached 28 coin pouches. Making use of OSRS items during this process will boost the amount of EXP per hour.

The items that you should use include the Ardougne Cloak as well as The Dodgy Necklace.

This Dodgy Necklace will help you to avoid failure more often when taking out the Ardougne Knight. This also results in less damage overall.

Hiding the attack option will be a must in this moment and can increase the EXP/Hour significantly.

For this method to be successful it is necessary to locate someone with OSRS Power Leveling among the Ardougne Knights that are located in Ardougne Square located in East Ardougne. Try to lure one into a home or change to the world 378 to locate an the already locked Knight in the northern house.