Rule of 40 for AI/ML at Seed
2026 data · Sample size: 359 · Source: Mixpanel Product Benchmarks 2025
About This Metric
Sum of revenue growth rate and profit margin should exceed 40% for a healthy SaaS company.
Higher is better · Unit: percentage
How to Improve
Ehsan's Analysis
The Rule of 40 breaks down for AI companies because AI has a unique cost structure: inference costs scale with usage AND quality improvements require ongoing research spending. A SaaS company at maturity can stop R&D investment and maintain the product (not recommended, but possible). An AI company that stops model improvement falls behind within 6 months. This means AI companies have a structurally higher "maintenance capex" than SaaS, reducing achievable margins by 10-20 percentage points. The AI-adjusted Rule of 40 should subtract "model improvement capex" (distinct from R&D for features) from the margin calculation. By this measure, most AI companies scoring 40+ on the traditional rule are actually at 25-35 adjusted. The AI companies hitting 40+ adjusted (Palantir, arguably) have found ways to improve their products through customer data rather than research spending, which reduces model improvement capex while maintaining competitive positioning.
Ehsan Jahandarpour
AI Growth Strategist & Fractional CMO
Forbes Top 20 Growth Hacker · TEDx Speaker · 716 Academic Citations · Ex-Microsoft · CMO at FirstWave (ASX:FCT) · Forbes Communications Council