Klaviyo, Inc. Class A had a revenue of 310.88M in the quarter ending Sep 30, 2025, with 6.06%. This bring the company's revenue in the last twelve months to 1.15B, Decreased 7.03%. In the fiscal year ending Dec 31, 2024, Klaviyo, Inc. Class A had annual revenue of 937.46M with 34.29% growth.