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The pay-per-use API

Examples current as of Sep 2026 · prices move, ranges don't

You build something, and you pay per chunk of text processed. The API is a raw ingredient — you bring the recipe. The reward is AI wired directly into your own workflow.

What it is

AI as a raw ingredient

Instead of renting a finished product, you call the model directly through code and pay for what you use. The cost unit is a token — a chunk of text roughly three-quarters of a word. Your developer counts tokens the way a kitchen counts ingredients.

This is how businesses embed AI into customer support, document processing, and custom tools.

Who it's for

Right for you if…

  • You have a developer (in-house or hired). This is not a no-code path.
  • You need AI inside your own product or workflow, not inside someone else's app.
  • Volume is real — enough that building the integration pays for itself.

Not for you if you want to plug into something ready-made, or you don't have anyone to build and maintain it.

What it costs, roughly

Pennies per task, plus your build time

Per-token pricing is tiny — a single request can cost fractions of a cent. But the bill grows with volume, and the surprise is usually on the input side: long documents and big contexts burn tokens fast. Budget by expected volume, not by the sticker rate.

Reliability to expect

Vendor SLA, but you own the stack

The model vendor has a service-level agreement and is generally reliable. But you're now on the hook for your own code, your own error handling, and the API key — when something breaks, it's your team's pager.

Examples

Who plays here

  • OpenAI — the API behind the chatbot; see the ChatGPT review.
  • Anthropic — the API behind Claude; see the Claude review.
  • Google — the Gemini API, if you're already in their ecosystem.

I'm David. I build AI that keeps your data yours.

David Nowak

Twenty years building software for businesses like yours — cloud tools when they fit, your own machines when the data demands it. Fixed fee projects starting at $500, or a standing second opinion on your AI and software decisions from $300 a month.

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