Similarweb Misses Q4 Revenue Acceleration Amid AI Push

Event summary

  • Similarweb reported $72.8M in Q4 2025 revenue, up 11% YoY but below expectations.
  • Full-year 2025 revenue hit $282.6M, a 13% YoY increase.
  • Non-GAAP operating profit was $3.4M in Q4, down from $2.6M in Q4 2024.
  • Customer count grew 11% YoY to 6,128, with 454 customers generating $100K+ ARR.
  • Launched Similarweb AI Studio and partnered with Manus for AI agent integration.

The big picture

Similarweb is positioning itself as a critical data provider for AI training and agentic tools, but longer sales cycles and revenue growth delays highlight the challenges of transitioning to an AI-driven model. The company's strategic partnerships with Manus and Bloomberg underscore its focus on expanding into AI-driven workflows, but execution risks remain as it navigates this shift.

What we're watching

AI Strategy Execution
How Similarweb's AI-driven data powerhouse strategy will impact revenue growth in 2026.
Sales Cycle Dynamics
Whether the longer sales cycles for AI deals will sustain profitability.
Customer Retention
The pace at which Similarweb can improve its net retention rate from current 98%.