OSRS Prayer 1–99 Guide: Gilded Altar vs Chaos Altar

Overview

Prayer is a buy-it-with-bones skill, and almost every decision in it is about how much you are willing to pay per XP. The methods differ by speed, cost and risk rather than by mechanics.

It is also a milestone skill. Protection prayers, Piety, Rigour and Augury each sit at a specific level, and most accounts get more out of reaching one of those than out of finishing 99.

This guide covers the gilded altar, the Wilderness Chaos Altar, ensouled heads, the Ectofuntus, and which levels are worth targeting before you commit to the whole grind.

Gilded Altar vs Chaos Altar

Both altars give 350% of a bone's burying XP. The gilded altar needs both incense burners lit to get there; the Chaos Altar gets there on its own. What separates them is the Chaos Altar's 50% chance not to consume the bone, and the same bone can be saved again on the next offering. The wiki averages that to twice the gilded altar's XP per bone, or seven times what you would get for burying it.

The price of that is the location. The Chaos Temple sits in level 38 Wilderness, west of the Lava Maze, in a multicombat zone, and player killers check it constantly because they know people are standing there with bones.

The practical rule from the wiki: if you move a goal from the gilded altar to the Chaos Altar, buying 53% of the bones you would have needed gives you about a 97% chance of getting there. That is the whole saving in one number, and it is why the Chaos Altar is the default for anyone who does not mind losing a trip now and then. Bring only the noted bones you are prepared to lose in one visit, keep a teleport ready, and let the druid un-note an inventory at a time.

For the best bones on a gilded altar, divide the current price by the XP column and pick the cheapest per point. Dragon and wyvern bones give the same 72 XP, so buy whichever is cheaper that day. Superior dragon bones give the most per bone but need 70 Prayer before you can offer them.

Quest and Diary Unlocks That Change the Route

Prayer's unlocks are less about access and more about which prayers you get and how cheaply you can offer bones.

Recommended Equipment and Boosts

Prayer has no combat gear requirement. The equipment that matters either raises XP per bone or reduces how many bones you need.

Level-by-Level Training Table

Prayer levels come from bones, so the route is really a choice of altar and bone tier. Pick the milestone you need first, then decide how you are paying for it.

Fastest Route

The fastest route is a gilded altar in your own house with both burners lit and the highest bone tier you can afford, run in tight banking loops.

1. Reach 75 Construction and build a gilded altar, or use a host's altar on worlds 330, 465 or 512.
2. Get Zealot's robes if you have 80 Firemaking; 5% of bones saved is 5% fewer bones to buy.
3. Light both burners every trip. Unlit, the altar drops from 350% to 250%.
4. Buy bones in bulk at the highest tier your budget supports.
5. Set up a house teleport and bank loop so each trip is a fixed click pattern.
6. Do the Prayer quest rewards first. Holy Grail alone is 11,000 XP.
7. Stop at your milestone. Most accounts need 77 for Augury, not 99.

Cheapest and Most Affordable Route

• The Chaos Altar is the cheap method that is still fast: the same 350% as a gilded altar and half your bones come back, at the cost of PK risk.
• The Ectofuntus gives 400% per bone, a little more than a gilded altar, but each worship needs bonemeal from the grinder and a bucket of slime. The wiki calls it slower and not much cheaper than a gilded altar.
• With the medium, hard or elite Morytania Diary, Robin in Port Phasmatys turns 13, 26 or 39 bones a day into bonemeal and slime for you, which is free Ectofuntus XP.
• Ensouled heads are often a byproduct of Slayer, so they cost time rather than GP.
• The bonecrusher gives Prayer XP on everything you kill while you train other things.
• Do every Prayer quest reward before buying a single bone.
• Use big bones and regular dragon bones rather than premium tiers if cost is the priority.

AFK and Low-Intensity Route

• Prayer has no AFK method. Offering bones is a click per bone at any altar.
• The bonecrusher is the closest thing: Prayer XP builds up while you do Slayer or bossing.
• Ensouled head reanimation is a slower loop with more time between decisions than altar offering.
• The Ectofuntus is repetitive rather than AFK; the pace is slow but the clicks never stop.

Ironman Route

• The Chaos Altar is the usual Ironman altar. Twice the XP per bone matters more when every bone came from your own kills.
• You cannot use another player's gilded altar unless they are in your Group Ironman group, and the wiki rates building your own as costly for little gain over the Chaos Altar.
• Ensouled heads from Slayer tasks are the safe main route. They arrive as a byproduct of content you are doing anyway.
• Do the hard Morytania Diary for the bonecrusher. Upgrading it to the necklace needs a dragonbone necklace from Vorkath and a hydra tail from the Alchemical Hydra.
• Farm dragon bones from green dragons early and from Vorkath later.
• Do not chase 99. Reach the milestone your build needs and spend the bones on something else.

Common Mistakes

• Offering bones at a gilded altar with the burners unlit, which drops you from 350% to 250%.
• Skipping Zealot's robes before buying bones in bulk.
• Taking your whole bone stack to the Chaos Altar in one trip.
• Chasing 99 when the account only needed 77 for Augury.
• Buying premium bone tiers at low Prayer levels where cheap bones would do.
• Training Slayer without a charged bonecrusher once you have the hard Morytania Diary.
• Skipping the Prayer quest rewards and buying those levels instead.
• Building a gilded altar without a fast bank-to-house loop, which doubles the real time cost.

Useful Plugins

• Chaos Altar / Wilderness warnings: surfaces PK risk before you commit a load of bones.
• Bank Tags: one-click bone withdrawals so altar trips stay tight.
• Inventory Tags: keeps bones and marrentill in fixed slots.
• Menu Entry Swapper: makes bone-on-altar a single action.
• XP Tracker: compares altar tiers and bone tiers against your actual spend.
• Prayer: tracks prayer drain and remaining points during PvM.

FAQ

What is the fastest way to train Prayer?

A gilded altar with both burners lit, using the highest bone tier you can afford. Zealot's robes save up to 5% of the bones on top.

Is the Chaos Altar worth the risk?

For most accounts, yes. It gives the same 350% as a gilded altar and has a 50% chance to keep the bone, so the wiki puts it at twice the gilded altar's XP per bone. It is in level 38 multicombat Wilderness, so carry only what you can afford to lose.

What Prayer level should I aim for?

43 for Protect from Melee, 70 for Piety, 74 for Rigour, 77 for Augury. Most accounts get more value from stopping at 77 than from reaching 99.

How do I train Prayer as an Ironman?

The Chaos Altar if you accept the Wilderness, ensouled heads from Slayer if you do not, and a bonecrusher for passive XP. Dragon bones come from green dragons early and Vorkath later.

Do I need 75 Construction for Prayer?

No. Worlds 330, 465 and 512 are the official house party worlds, and hosts there often have a gilded altar with both burners lit. The Rimmington portal is the quicker one to use, and Phials in the general store un-notes bones for 5 coins each.

How much does 99 Prayer cost?

It depends entirely on current bone prices and which altar you use. Price your chosen bone tier live rather than trusting a fixed total, and roughly halve the bone count if you switch to the Chaos Altar.

Related Guides

• Slayer 1–99: the bonecrusher pairing that makes Prayer nearly free.
• Construction 1–99: the gilded altar at 75.
• Chambers of Xeric: where the Rigour and Augury scrolls come from.
• Vorkath: steady dragon bones, and the dragonbone necklace for the bonecrusher necklace.

Bottom Line

Prayer is a milestone skill. Decide whether you need 43, 70, 74 or 77 before you decide how to pay for it.

A gilded altar with both burners lit is the safe fast answer, the Chaos Altar gives the same 350% per offering for about half the bones if you accept the Wilderness, and ensouled heads plus a bonecrusher are the low-risk Ironman answer.

If you just want Augury and Rigour without the bone bill, our Prayer training is hand-done.