Blog
The build, the cost, the receipt. Real stories from shipping AI things while playing pro ball in France.
I built 19 free AI lessons for people who don't code
19 free 15-minute AI lessons in plain English: the AI tools I use every day, and how chips and power make AI work. You practice on the page. No sign-up.
I tried putting GrokBot on a small device
I gave Grok a CoreS3 board and tried to build a little Rick for my desk. The screen design worked better than the colours on the real device.
Claude vs Codex: I asked both to make a game, then tried playing it
I gave Claude and Codex a Subway Surfers-style game task. Both finished a build. Playing the results was a different story.
Kimi K2.6 rebuilt my store and invented reviews
I asked Kimi K2.6 to rebuild an ecommerce site with a homepage and product page. I liked parts of the result, but it also created reviews I couldn't use.
Three things I tried learning with NotebookLM
I used NotebookLM for nutrition research, AI agents and game theory, then tried an audio conversation, a video overview and a slide deck.
I gave three AI models the same website brief. Then I added a design skill.
I compared Claude, ChatGPT and Gemini on a gummy-vitamin store, then asked all three to improve it using a frontend skill. Here's what I checked.
Can Claude fit this theme to my handheld?
I ask Claude to organize my handheld's game list and fit a Joker theme. The recording ends with the menu on the actual device.
I built a notes app with AI. Then I tried to use it.
I build a place for my notes with AI, ask about reading handwriting locally, and try the unfinished app on my phone.
My AI needs to know where I stand
I told Claude to grill me about business, basketball and life. I want it to know my answers and help me speak with less water.
First, it needs to know how I talk
I’m building my second brain from my own words, notes and decisions. Before adding more, I start with the voice library.
I gave my keyboard a pet while I was supposed to be learning HTML
I found AgentPet during an HTML lesson, put a Rick and Morty GIF on my keyboard screen, tested its lights, and carried the project from Claude to Codex.
I tried JEV on my video. It left me with the same review work.
What I understood about JEV, the questions I asked, and the result of trying it on 56 sections of my own video.
Two AI models built the same founder game. The prettier one lost.
I gave GPT-6 Astra and Fable 5.1 the same research folder and one bad prompt: build an 8-bit game that replays Rockefeller's decisions. Astra looked better. Fable knew more.
41,049 unread emails. I built the $15-a-month tool for free and cleaned 3,000 in one run.
Inbox-cleaning apps charge $14.99 a month, and one got caught selling your data. I asked Claude Code for a local Gmail tool that unsubscribes and sorts, then open-sourced it.
Can a pint of Guinness build a website? Yes. Five steps, one $3 video, zero design skill.
I found an Irish pub in Strasbourg with a boring website and rebuilt it around a pouring pint. One AI image, one $3 video, a free scrape of the menu, and Claude Code. Five steps.
I post once. A script reposts it everywhere. Here is the exact setup.
Five accounts, one upload. Repurpose.io moves Instagram to YouTube. Buffer plus Codex reposts my old basketball Reels to TikTok, one a day. The setup, the cost, the caption mistake that breaks it.
You sold a $20 box. Where is the $20? The six numbers that run a store.
Grüns reportedly burned about $8 million before profit, then sold to Unilever for a reported $1.2 billion. The same math at the size of one $20 snack box: margin, CAC, LTV, ROAS.
Why Is My Shopify Store Invisible to ChatGPT?
Your store may be invisible to ChatGPT because Cloudflare bot settings or a WAF rule block AI crawlers. Fix your robots.txt and bot rules, not your content.
I Asked ChatGPT to Recommend Brands, Here’s What It Said
ChatGPT ignores most D2C brands and repeats a short list of incumbents. Here is the probe method and why your brand stays invisible in AI answers.
I let an AI audit my website, fix its own findings, and ship, here's what it caught
Yauhen Massalski let Claude review yauhenm.com end to end. It found duplicate schema markup and a script that could wipe the blog, and shipped fixes the same morning.
Can you actually get a brand cited by AI search? A real before/after
Yes, you can get a niche brand cited by AI search in weeks. A real, anonymized before/after: 644 AI-referred sessions in 4 weeks vs a sister site that got 16. Sessions, not sales.
How to check if your Shopify brand shows up in ChatGPT
A 10-minute cold-browser test: ask four buyer-intent questions across ChatGPT, Perplexity, and Google AI, and record whether your brand shows up and how it's described.
From pro basketball to AI search: who is Yauhen Massalski?
Yauhen Massalski is a pro basketball player and D2C growth consultant who uses the same discipline from the court to fix brands' visibility in AI search, ChatGPT, Perplexity, and Google AI.
Why classic D2C SEO is failing in ChatGPT (and what to do instead)
Ranking #1 on Google doesn't mean your brand gets named in the AI answer. Why classic D2C SEO fails in ChatGPT, and what to do instead.
ChatGPT thought I was only a basketball player. Here's how I'm fixing it.
A live audit of why ChatGPT mislabeled me as only a basketball player, and the three fixes that make AI describe you the way you actually want, the same playbook I run for D2C brands.
I asked a restaurant chatbot for 50% off
My restaurant chatbot walkthrough covers business information, answer rules and a question-testing loop. The opening test asks for a discount the chatbot shouldn't invent.
I rebuilt my own website with Claude in one morning
How I redesigned yauhenm.com with Claude Opus in about four hours. Three rejected directions, one shipped V4, and what I'd do differently next time.