Journal
Production AI engineering, with the bill attached.
What we've learned shipping LangGraph in production, real multi-tenant RLS gotchas, agent eval harnesses, and the cost numbers nobody else publishes. One post a week.
May 12, 2026 · 14 min readHow we built Lonesyte's 12-agent orchestrator: Core MVP in 4 weeks
Twelve specialist agents over a custom orchestration layer that replaced 16 hrs/wk of SDR triage. Why we picked LangGraph, where the Assistants API would have broken under load, and the cost-routing trick that kept the bill 7× cheaper than naive GPT-4.
AI AgentsProduction
May 5, 2026 · 9 min readWhy we picked LangGraph over the Assistants API for production
The Assistants API is a great demo and a bad foundation. Three places it breaks under load, state ownership, tool-call concurrency, and cost routing, and what LangGraph (or equivalent) gives you instead.
AI AgentsArchitecture