Compression as via negativa: the cheapest token is the one you never send
Take any coding agent session and open the raw request log. Not the pretty transcript - the actual payload. What you find is a JSON search result with 100 hits where 3 mattered, a log file where the interesting line is buried in 800 lines of "INFO: still fine," and a directory listing of a repo the model already walked twice.
Then apply the uncomfortable ratio: cost of the finished output versus the raw inputs actually required to produce it. The model needed maybe 2,000 tokens of real signal. You paid for 55,000. In manufacturing terms, that is a part made of solid gold to hold a plastic clip in place.
I spent a few weeks running everything - coding, research, boring text work - through a compression proxy called Headroom, and the interesting part was not the money. It was watching exactly how much of what I "sent" to the model was never information in the first place.
What it actually does
It sits between your agent and the API and squeezes everything the model reads - tool outputs, logs, retrieved chunks, conversation history - before it goes upstream. Compression happens locally, nothing gets shipped off to a third party to be shrunk. The model can pull the original back if it needs it.
Why I moved back to SUSE after two decades - and why you should re-evaluate your stack while it still works
Somewhere around the year 2000, I bought a computer magazine because it had a CD glued to the cover. SUSE Linux 6.4. ReiserFS. I got as far as "select a mount point for root" and stopped, because I had no idea what a mount point was, and no realistic way to find out. No search engine within reach. No forum. Just me, a beige tower, and a dialog box asking me a question in a language I didn't speak.
I abandoned the installation. My first contact with Linux ended in surrender at the partitioning screen, which I suspect is the most common origin story in our industry.
A few months later, SUSE 7 came out and I ordered the boxed set. Seven CDs. A printed manual thick enough to stop a small projectile. A t-shirt. A sticker of a chameleon. And most importantly: no license key scrawled on a disc in marker by someone's cousin. I installed an operating system that nobody asked me to prove I deserved. That smell of freedom stayed with me longer than the T-shirt did.
Every two weeks, like clockwork, I walked to the kiosk and bought the same magazine. This was back when "the cloud" still meant rain. The pages were glorious. Linux distribution shootouts - Debian vs. SUSE vs. Fedora vs. Ubuntu, complete with benchmark tables nobody asked for and everybody loved. Firewall configs. Server hardware reviews. How to set up remote access so you could SSH into your home box from the office and play terminal Tetris when the boss wasn't looking. How to share your "totally legally acquired" movie collection across the family network. Best open-source database. Troubleshooting tips that actually worked.
It was nerd church. I read every word, including the ads.
Then something shifted. First subtle, then about as subtle as a forklift through a glass door.
The Linux comparison shrank to half a page. Then a quarter. Then a sidebar. In its place: best LCD monitor for Photoshop. Best smartphone for the outdoorsy type. Best printer for home photo printing. Music apps you "cannot live without." Best home cinema projector. Dolby surround systems that cost more than my first car.
The magazine hadn't been cancelled. It had been quietly lobotomized. Same logo, same price, same kiosk. Different soul. It went from "build it yourself" to "buy this and consume." And teenage me was annoyed because none of it helped my career. I didn't want to know which speaker thumped hardest, primarily because I didn't have any money to buy one. I wanted to know how to make the server stop falling over.
TrenchOps 🐎 
