Lil Chungies Inflation Index
How fast is gold losing value in Gielinor?
The OSRS RPI is a weighted inflation rate for a basket of 680+ of the most actively traded items on the Grand Exchange, from runes, food and potions to skilling supplies, everyday PvM gear and mega rares. It is rebuilt every day from official GE prices. No skibidi toilet.
Loading the index…
Current RPI metrics
Historical OSRS RPI
Each point is the year-on-year change in average prices for that calendar month. Hover to see how many items were tradeable at the time.
What's driving it
Year-on-year change by category for the last full month, and each category's contribution to the headline figure.
Basket items
Average price last month vs the same month a year earlier. Sorted by contribution to the headline figure; click a column heading to re-sort.
Look up a past month
Pick any month to see its year-on-year and month-on-month change in average prices.
How the index works
- The basket holds every item averaging at least 10 trades and 25m gp a day (75m gp for equipment) on the GE over 30 days. Cosmetics, duplicates, notes, teleports, keys and lottery items are left out.
- Weights. Each of the 13 categories has a fixed share of the index. Within a category, items are weighted by the square root of their daily gp traded, so busy items count for more but a few billion-gp items can't drown out everything else.
- New items join after 60 days on the GE, once their guide price has settled. Before release they're simply left out and the other weights are rescaled.
- Anomalies. A price that moves more than 10× within one comparison is set aside as a likely data glitch and listed under "excluded".
- Data are official GE guide prices. The index is rebuilt daily, and the last update is shown at the bottom of the page.