The AI Margin Squeeze: How Surging Inference Costs Are Quietly Rewriting B2B SaaS Pricing, COGS, and the Rule of 40 in 2026
AI product gross margins now average 52% — thirty points below the SaaS benchmark — and inference eats 23% of revenue at scale. Inside the dual-tracked margin reporting, tiered model routing, and post-AI-COGS Rule of 40 reshaping every B2B SaaS board deck in 2026.