From $1,069 to $140/mo: Self-Hosting a Complete AI Tech Stack with Dokploy, Supabase, and vLLM

Building a vertically integrated AI company means owning your infrastructure. We cut subscription costs from $1,069 to $140 monthly by replacing Vercel, Railway, VAPI, and third-party LLM APIs with self-hosted alternatives: Dokploy for deployment, Supabase self-hosted for databases, vLLM with fine-tuned Mistral for inference, and Asterisk PBX for voice. This article maps the technical decisions, infrastructure costs, and DevOps trade-offs required to achieve full-stack ownership across six business units—Load Bearing Capital, Demo, Valet, Credit Repair, Petroleum Noir, and StructCalc AI—all running on self-managed infrastructure built by a single engineer from the ground up.