Year-on-year looks better.
Figure 1: Instantaneous Inflation Per Eeckhout (2023) for CPI (Blue) PCE Deflator (Green), PCE Deflator (Brown). Source: Bea, Bea via Fred, and Author’s Calculations.
Figure 2: Instantaneous Core Inflation Per Eeckhout (2023) for CPI (Blue) PCE Deflator (Green), PCE Deflator (Brown). Source: Bea, Bea via Fred, and Author’s Calculations.