Fastest Thieving XP in Runescape (OSRS)

Method #1:
Swimming:

Xp/Hr:
Scales with level, on average about 230 tears which is 41.6k agi and 149.7k Thieving

Description: Swimming AKA Mermaid’s domain is a multi-skilling method done for 200m thieving which results in roughly 50m agility xp. The method has quite a bit of nuance but isn’t hard to pick up.
Required gear includes flippers, fishbowl helmet, merfolk trident (stores 10 pufferfish), the breathing apparatus, and graceful. Regen brace and ring of suffering are nice to have to defend against lobstrosities. An alternate account can be used to scout chests and resupply staminas.

Examples of efficient routing around currents:

Note: this section was written before the ring of endurance was released; keeping one charged and equipped one will make the stamina potions you have with you last longer.

RuneLite bank tags:

swim,12625,7535,11133,6666,7534,11854,11856,11194,11193,11192,11191,11190,13280,19550,19710,6585,21555,13583,13585,13595,13597,13607,13609,13619,13621,13631,13633,13671,13673,21067,21070,21649,12625

Example setup (helmet already stored underwater):

Video:

Video of just the method, not a guide:

Method #2:
Plunder:

Xp/Hr: 270k/hr~ Solo – 285k/hr~ Duo

Description: Duo plunder is the fastest non-multi skill thieving xp in the game. Do room 7 and 8, looting golden chests 6-7-8 and sometimes chest 4-5 depending on which door.

Using a duo partner is highly recommended. You and your duo can call which door is the correct door which helps speed up the process of getting to room 7. Be aware that if a new player enters the pyramid that the doors will reset, so its best to do this method on a world that is empty. Most people use a standardised calling system for the doors, which Dookami explains in his video linked below.

Note: this section was written before the ring of endurance was released; keeping one charged and equipped one will make the stamina potions you have with you last longer.

Gear setup:

RuneLite Bank Tags:

pp,13074,13074,13075,13076,13077,13078,9044,9046,9048,9050,12929,12931,13197,13199,9040,9034,9028,11133,6685,11854,11856,13583,13585,13595,13597,13607,13609,13619,13621,13631,13633,13671,13673,,21067,21070

Video:

Duo Video:

Method #3:
Blackjacking Menaphite Thugs

XP/HR: Scales with level, 260k xp/hr is achievable at level 99

Description: For the minimal mousemovement you see in the video, you need to play on resizeable mode. You should be using saradomin brews for food. You can unnote food at a Banknote Exchange Merchant in the northern part of the city.

Method #4:
TzHaar Thieving (Gem Knights)

Xp/Hr: ~260k/hr (~0.9ehp)

Gear: Rogues outfit (optional for increased tokkul/gems, not xp), ice gloves and dodgy necklaces essential, dramen staff or lumbridge elite diary to get there . Thieving or max cape for the perk and must have Ardougne hard diary completed. This method is not very good pre 99 or without diary as you fail a lot without these

Invent: Gem bag (optional), rest brews and necklaces at roughly 2:1 ratio. Can also leave 1 invent slot free for tokkul so you get it from the start of your session Description: Lure npc into spot shown in video or just hop to world where knight is already lured (they stay there until the next system update or if a player kills them), commonly used worlds are 429, 450 and 396 for example. Turn left click attack npc off and spam knight for tokkul, gems and xp. Gems auto fall to the floor if your invent is full so if you’re using this for afk it’s best to just let them drop

Video:

Method #5:
Ardougne Knights:

Xp/Hr: ~250k with no fails (95 thieving with ardy medium diary)

Description: Super straightforward method you just left click and empty pouches before you get 28 of them. Xp/hr is significantly lower if you have even a slight chance of failing. If you have a chance of failing it is worth it to use dodgy necklaces. To find a world where a knight is already lured you may use the Thievinghost discord/clan chat:
https://discord.gg/S2b6GX8

Video:

Method #6:
Vyre Nobles:

Xp/Hr: 270k/hr Thieving (with 99 cape and ardy hard diary), 7k/hr Magic

Description: Gear: Rogues outfit (optional for double blood shard drop, not xp), dodgy necklaces essential. Thieving or max cape for the perk and must have Ardougne hard diary completed. Lava staff or earth staff + tome of fire to save on runes. This method is not very good pre 99 or without diary as you fail a lot without these. High prayer and hitpoints levels recommended. Inventory: Cosmic, earth, and fire runes, rest prayer pots and necklaces. Leave 1 invent slot free for coin pouch so you get it from the start of your session. Trap Violetta on her spawn tile so she never moves. Can be trapped using a sentinel or duo partner. Use Arceuus spellbook, cast shadow veil every 30 seconds. Replace necklaces and pray redemption as needed. Alternatively – using a heal-other alt can entirely eliminate the need for redemption and prayer potions. Video using heal other.

Video:

Video: