Aliaksei Zelianouski
Alex, if you prefer. Building agents and apps with AI for fun, not business.
Notes on building agents and apps with AI — written by an engineer who filters the hype and tests every claim firsthand. Edited with Simona, an AI pair partner. More on what this is.
Recent
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What is J-space and do models really have thoughts?
July 13, 2026
Do models really have thoughts we can read, or is Anthropic's J-space just marketing, as many claim? Let's work out what it actually is, from scratch and jargon-free.
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Relax, the Model Doesn't Mean It
July 3, 2026
AI models grow their own values as they scale, and some of them are pretty bad. In real scenarios, the model doesn't act on them.
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The second agent I won't automate
June 25, 2026
My prod monitoring runs on two agents: a fully autonomous loop that watches production, and a manual Claude Code setup that troubleshoots what it finds. Here's why the second one stays manual on purpose.
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The cheapest part of my AI video was the part that does the most work
June 18, 2026
My second AI-made video is a 90-second product demo. The cinematic bookends cost real money. The 66 seconds in the middle - the actual demo - cost nothing, because it isn't generated. It's a real browser, driven by code. And reshooting it three times cost nothing either.
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What my AI agent watches while I sleep
June 13, 2026
I built a loop agent to babysit my production. Then it quietly got better at the job than I am.
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My video generation pipeline that built itself
June 7, 2026
Two minutes of cinematic AI video, built across two months with my AI sidekick, all through a casual conversation. Every image, voice, and frame generated — and the tools built themselves along the way.
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Everyone's Mad About Copilot's Pricing. The Real Move Is Upstream.
May 30, 2026
GitHub Copilot moving off flat $20/mo and onto usage-based billing is dominating the news cycle. The takes write themselves: the era of cheap vibe-coding is ending, the AI companies were eating losses, and now the bill is coming due. But that story is downstream. The number that actually moved — across most of the eight providers I track in a Werewolf side-project — is the per-token API price. Here's what two months of pricing updates look like from inside.
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CTF. Everyone was using AI. So I brought mine.
May 23, 2026
A weekend at BSides Tampa 2026. The winners had finished before I even sat down, so I didn't feel bad adding an AI to my team. The organizers had told us AI wouldn't help much on the 24 challenges spanning the full security stack. They couldn't have been more wrong. This is about the specific moments where AI did the kind of reasoning people still claim it can't. And what this means for cybersecurity.