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Ratios

Duolingo (DUOL) Cost of Revenue (2020 - 2025)

Duolingo has reported Cost of Revenue over the past 6 years, most recently at -$85.5 million for Q4 2025.

  • Quarterly results put Cost of Revenue at -$85.5 million for Q4 2025, down 161.94% from a year ago — trailing twelve months through Dec 2025 was $86.0 million (down 62.45% YoY), and the annual figure for FY2025 was $125.7 million, down 38.29%.
  • Cost of Revenue for Q4 2025 was -$85.5 million at Duolingo, down from $35.1 million in the prior quarter.
  • Over the last five years, Cost of Revenue for DUOL hit a ceiling of $138.0 million in Q4 2024 and a floor of -$85.5 million in Q4 2025.
  • Median Cost of Revenue over the past 5 years was $24.7 million (2022), compared with a mean of $30.4 million.
  • Biggest five-year swings in Cost of Revenue: skyrocketed 418.25% in 2022 and later crashed 161.94% in 2025.
  • Duolingo's Cost of Revenue stood at $9.9 million in 2021, then skyrocketed by 418.25% to $51.5 million in 2022, then decreased by 21.21% to $40.6 million in 2023, then skyrocketed by 240.06% to $138.0 million in 2024, then crashed by 161.94% to -$85.5 million in 2025.
  • The last three reported values for Cost of Revenue were -$85.5 million (Q4 2025), $35.1 million (Q3 2025), and $69.7 million (Q2 2025) per Business Quant data.