who writes this
Theodor co-founded Cult of Coders in 2015 and has been building web and mobile products with the team since. The writing here comes out of that work rather than alongside it: cost models built for real decisions, notes on tools after they reached production, and the occasional argument with the industry consensus.
Where an article makes a claim about numbers, the sources are in the article.
Published by Theodor Diaconu
23 articles
The Deadline That Didn't Move
Nobody was watching the right deadlineWhich half of Article 50 applies to you+5 more
Boring Is Not In-Distribution
The essay came backRails is as boring as it gets+6 more
The Break-Even Moved
Three days' noticeThe cache line took the worst of it+6 more
Markdown Has No Compiler
The file that only growsIt just has to be slightly behind the code+6 more
Fleets Need a Grader
The day the fleet shippedTwenty thousand dollars for a worse compiler+6 more
The Number Nobody Checked
Not even Paul Graham knowsThe paper trail ends in a PDF+5 more
The Harness Tax
The consultant who bills for reading your emailSame model, same tests, four times the bill+6 more
A Billion Tokens for $6.36
The receipt and the warningOne cut, one retraction, one warning+6 more
Somebody Has to Run the Exploit
A 9.8 for code that never existedThe machines actually got good+6 more
Your Code Got Cheap. Your Signature Didn’t.
The sign only robots can readEverybody patched it differently+6 more
Same Score, 1/36th the Bill
The receiptsThe body didn't change+6 more
Nobody Reads the Spec
The spec that couldn't build itselfTwo bets, opposite directions+6 more
DeepSeek Shipped a Post-Train, Not a Model
Nobody shipped a model todayThe cache line is the whole price war+6 more
The Day AI Pricing Fell Off a Cliff
A price cut three weeks after launch is a confessionNobody cuts 80% out of kindness+6 more
Your Agents Aren’t Tired. You Are.
The tiredness got a nameThree agents, then the cliff+4 more
Coding Agents Hit Production. Production Hit Back.
The control group defectedReview is where the speedup goes to die+6 more
The Real Cost of a $500 Fine-Tune
The GPU bill leaves out most of the projectThe scorer becomes product policy+3 more

What It Actually Costs to Self-Host Kimi K3
The short answer starts at $40,000 a monthK3 fits on 8 B300s or 16 B200s+5 more

Agentic Engineering in 2026
The vibe coding hangoverContext engineering ate prompt engineering+5 more
How we use the design thinking process
Double diamond design thinkingPlanning and discovery methods+3 more

How to fail an IT project
Defining project failureThe 5 fatal mistakes to avoid+2 more

Increase sales with customer-centric design
Organization-centric versus user-centric designWeb design components that don't match+4 more

Automating healthcare websites
Leveraging automation in the fight against COVID-19Why automate?+3 more

