7 Hidden Costs of AI-Assisted Development (And How I Actually Fixed Them)

I've been building two macOS apps as a solo dev using Claude Code, Codex, and Cursor daily. After six months of AI-assisted development, I realized the actual cost of working this way goes far beyond API bills. Here are the 7 hidden costs I discovered — and practical fixes for each. 1. Token Burn You Can't See The problem: Most AI coding tools don't show you real-time token consumption. You fire off a prompt, get a response, and have zero idea whether that interaction cost $0.02 or $2.00. Over a week, those invisible costs compound fast. My fix: I started tracking token usage obsessively. For my macOS work, I built TokenBar — a $5 menu bar app that shows real-time token costs across providers. Seeing the number tick up in real time completely changed how I prompt. I went from "let me ask Claude to explore this codebase" to "let me give Claude exactly the 3 files it needs." Impact: My weekly API spend dropped ~40% just from visibility alone. 2. The Context Window Tax The problem: Every