Klaviyo, Inc. Class A had a revenue of 350.19M in the quarter ending Dec 31, 2025, with 12.65%. This bring the company's revenue in the last twelve months to 1.23B, Decreased 6.94%. In the fiscal year ending Dec 31, 2025, Klaviyo, Inc. Class A had annual revenue of 1.23B with 31.63% growth.