018 min
LLM Gateway at $1.2M: when the flat-rate math broke
Seven weeks ago I published a post about DevPass that contained this sentence: Those three prices and that 3× multiplier have been constant since day one — every "pricing change"…
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028 min
DevPass: growing an AI coding subscription with a passport
In my last post about LLM Gateway I mentioned DevPass in passing as "the single biggest inflection" in the company's growth. This post is the zoomed-in version: how a flat-rate…
036 min
Building LLM Gateway: from zero to $470K in 12 months
In May 2025, Luca Steeb and I started building LLM Gateway, an open-source API gateway for Large Language Models. Twelve months later, it has processed over $470K in verified…
043 min
Build your perceptron neural net from scratch
“ In the late ’50s, a Cornell scientist named Frank Rosenblatt had proposed the world’s first neural network machine. It was called the Perceptron” Let’s start by defining the…