Direct APIs, OpenRouter, or a local M5 MacBook running Ollama — which is actually the cheapest way to run AI in 2026? Real per-token math, the 500M-token crossover point, and three ways to monetize the answer.
Most ChatGPT API users in 2026 spend between $18 and $640 per month — here are the real numbers across 5 spending tiers, with the three levers that cut bills by 40–70%.
We built 5 real AI projects and tracked every dollar. From a $47/month chatbot to a $12K/month SaaS platform – here is what AI app development actually costs in 2026.