Context-efficiency gateway
Send your model less, without losing anything.
Densilo sits on your machine between your AI coding tools and the model. It compresses the bulky, repetitive context they resend every turn — file dumps, tool output, logs — so you pay for fewer tokens. Your prompts and code never leave your computer to reach us.
Free tier is live. No card to start. Runs locally as a menu-bar app.
How it works
A local proxy, not a middleman.
Install and connect
The desktop app runs a proxy on your loopback address and points your AI coding tool at it. One command; nothing else changes about how you work.
Evidence gets compressed on the way out
Repetitive tool results and file content are re-encoded into a compact, reversible form before the request leaves your machine. Your actual instructions are never touched.
The model works as normal
The provider sees a smaller request and answers it. Nothing about the conversation or the result changes for you — only the token bill does.
You see exactly what happened
A local dashboard shows every request, what was compressed, and the token estimate — labelled honestly as an estimate, never dressed up as an invoice.
Correctness & privacy
Built to be trusted with your codebase.
Prompts stay local
The compression runs inside the app on your machine. We never receive your prompts, your code, or your model responses. Only aggregated token counters are sent to bill usage — never content.
Byte-exact by default
For data and text, what the model receives decodes back to the original bytes. Compression that changes meaning is not compression — it's a bug.
Exact-recoverable for code
Code compression is opt-in and reversible: an elided function body carries a handle the model can expand back to the exact source on demand — never a summary, never a guess.
No request-body logging
The gateway does not log request or response bodies. The audit trail records that something happened and its shape, not what it said.
Works offline
Lost connectivity doesn't block you. The local proxy keeps running on your last known plan; the model path is never held hostage to our servers being up.
Independent by design
Densilo is its own runtime. It doesn't depend on any other optimizer or send your traffic through a third party to do its job.
Start with the free tier.
Create an account, install the app, and route your coding tool through it. Upgrade when the savings are worth it to you — not before.