The smallest standardised price move in a currency pair — 0.0001 for most forex pairs.
Pip stands for "percentage in point" and is the smallest standard unit used to measure a price move. For forex pairs with 4 decimals (EUR/USD, GBP/USD) 1 pip = 0.0001. For JPY pairs (USD/JPY) with 2 decimals 1 pip = 0.01. Note for gold: the industry typically defines 1 pip as 0.10 USD (10 cents), not 0.0001. Suna AI Vision applies the pip definition automatically per asset class — you don't have to convert anything yourself.
EUR/USD moves from 1.0850 to 1.0875 = 25 pip. At 1 standard lot (100k volume) = 250 USD profit.