In Q4'25, GOOGL's total operating expenses reached $32.13B USD, with R&D expenses at $18.57B USD marking a significant surge, while SG&A expenses stood at $13.56B USD, reflecting a more moderate increase from the prior quarter. Over the period from Q1'23 to Q4'25, operating expenses exhibited an overall upward trend, growing from approximately $21.76B USD to $32.13B USD, driven primarily by escalating R&D investments that rose steadily from $11.47B USD to $18.57B USD, with notable acceleration in the latter half of 2025. SG&A expenses showed greater volatility, fluctuating between $9.45B USD and $14.60B USD before stabilizing around $13-14B USD in recent quarters, underscoring R&D as the dominant driver of expense growth amid potential expansions in innovation and operations.