The Prompt Tax: Why Every AI Feature Costs More Than You Think

Every time you add an AI-powered feature to your app, you're signing up for a hidden cost I call the Prompt Tax. It's not the API bill (though that's real too). It's the ongoing maintenance burden of keeping prompts working as models change, inputs vary, and edge cases multiply. Let me break it down. The Visible Cost You write a prompt. You test it. It works. You ship it. The API costs $0.002 per call. Done. That's what most teams budget for. The Hidden Tax 1. Drift Maintenance Models update. GPT-4 behaves differently from GPT-4 Turbo behaves differently from GPT-4o.