AI Subscriptions vs API Pricing: Where's the Crossover?
Originally published at API Cost Lab. Last updated: October 2026 If you're building with AI, you eventually face a deceptively simple question: should I just pay for the subscription, or pay per token through the API? The answer isn't a preference — it's math. And the math has a crossover point most developers never calculate. Here's the heuristic, stated up front as what it is — a rule of thumb, not a law: Under ~$200/month of usage: a flat subscription (ChatGPT Plus/Pro, Claude Pro/Max tier e…