The CPI tracks the average change in prices paid by urban consumers for a fixed basket of goods and services. It's published monthly by the US Bureau of Labor Statistics.
Core CPI excludes food and energy — categories with volatile prices — to reveal underlying inflation trends. Both are watched closely by the Federal Reserve.
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Open Decision Lab →Frequently asked questions
Why do headline and core CPI differ?
Food and energy prices swing sharply with weather, geopolitics, and commodity cycles. Core CPI strips these to show durable trends.