Alphacast High Frequency CPI - December 29th 2025 to January 4th 2026
Alphacast High Frequency CPI: Inflation was 0.7% WoW
Inflation accelerated on a weekly basis. Consumer prices rose 0.7% WoW, up from the prior week’s revised 0.59%. On a monthly basis, inflation picked up to 2.2% MoM, preserving the prior week’s run rate. Furthermore, the annual rate held steady at 30% YoY.
During the reference week, core and seasonal prices heated up WoW, while regulated prices eased significantly. Core inflation climbed to 1% WoW, up from a revised 0.8% the week before. On a monthly basis, core inflation intensified to 2.3% MoM. Seasonal items rose 0.74% WoW (vs. a revised 0.56% previously), while their monthly pace accelerated to 1.7% MoM. Regulated prices increased 0.1% WoW (vs. a revised 0.3% previously), while their monthly pace rebounded to 2.3% MoM.
Note: This week, we are sharing a shortened version of the report as we are currently in the midst of migrating and upgrading our pricing system. Very soon, the new system will go live and enable us to publish core inflation indices with daily updates, which will be made directly available in Alphacast’s datasets. This enhancement marks a significant step toward greater accuracy and frequency in inflation tracking, further facilitating real-time analysis. Thank you for joining us in this transformation process. Any feedback or suggestions are more than welcome.