AI Self-hosting math people skip:
A GPU fleet sized for peak runs at 30–60% utilization → effective cost 1.5–3x the headline rate.
Break-even is usually sustained hundreds of millions of tokens/day. Below that the API wins.
diffco.us/blog/self-host…
Your trusted AI software development partner
- Our hard rule for AI in regulated finance: Models propose. Deterministic services execute. The model never holds the keys to a money-moving API. Policy gates are unit-tested code, not prompts. The model can be wrong. The gate can't. diffco.us/blog/ai-in-fin…
- Check out our interview about: How Digital Agencies Build and Deliver
- 1/ The most expensive AI mistake of 2026: building an agent for high-cost-of-error work because agents are fashionable. GC deploys an autonomous contract-drafting agent. One unsupervised mistake. Six figures of remediation. Permanent program death.
- Vibe-coded a product. Customers want to buy it. Investors want to fund it. Now you have a product — and structural debt that sinks the company in 6-9 months if you ignore it. Rescue at month 2: 2 engineer-months. Forced rebuild at month 12: 6+ months + churn.

