A Trick That Cuts Claude API Bills by 60%

A pricing quirk worth knowing about

Someone discovered something odd about how Claude — the AI from Anthropic — charges for its work.

When you use Claude through an app or a service built on top of it, Claude reads your instructions, your history, your documents. It charges by the token — basically, by the word. More words, bigger bill.

But images? Claude charges for images by size — by pixel dimensions — not by how much information is packed inside. And here's the interesting part: you can fit an enormous amount of text inside a small image.

A developer named @teamchong built a small tool called pxpipe that quietly sits between your software and Claude, converting bulky text — long instructions, tool documentation, chat history — into compact images before it reaches Claude. The result, in real tests: a session that cost $42 came down to $6. Same work, same result.

Is there a catch?

Yes, a small one. Anything that needs to be exact — a password, a code number, a unique ID — has to stay as text. Images are slightly fuzzy by nature. So the tool routes those sensitive bits separately.

Also worth knowing: Anthropic could adjust their image pricing at any time. This arbitrage window might not stay open forever.

Words worth knowing

Token — The unit AI companies use to measure and bill for text. One token is roughly three-quarters of a word. A long email might be 300–400 tokens.

API — A connection that lets one piece of software talk to another. When a business tool uses Claude under the hood, it's communicating via API — and those API calls are what generate the bill.

Proxy — Something that sits in the middle of two systems and quietly intercepts or adjusts the conversation between them. Like a translator you never see.

If you're already paying for Claude through a product or service, ask whoever built it whether something like this could apply to your setup. The savings are real.