Shares of Alphabet, were down about 4% in after-hours trading, after losing about 40% of their value in 2022.
Revenue from Google advertising, which includes Search and YouTube, fell 3.6% to $59.04 billion.
Alphabet's net income fell to $13.62 billion, or $1.05 per share, from $20.64 billion, or $1.53 per share, a year earlier.
Adjusted profit of $1.05 per share fell short of an expected $1.18 per share, according to Refinitiv.
Like rivals, Alphabet had bulked up during the pandemic and into last year, adding 12,700 new jobs in the third quarter alone.