What I'm learning while building.

Build notes, lessons learned, and technical essays by Aymeric Dijoux. Not a regular blog — I write when I have something worth sharing.

Based in Paris · Épinay-sur-Orge (Essonne) & Réunion Island

Jun 16, 2026

I built an app to memorize 3000 English words. No account, no server, no build.

The 3000 most useful English words, ordered by frequency, as flashcards with spaced repetition. It all lives in the browser, the data is the single source of truth, and it's online on GitHub Pages. The story of a mini-app designed to last with zero maintenance.

build · indie · 3 min
Jun 16, 2026

I made Claude, GPT and Gemini predict the World Cup. I'm keeping score live.

Three frontier models, 72 group-stage matches, predictions frozen before kickoff, and a leaderboard that updates itself. A benchmark dressed up as a game — and the perfect excuse to ship a quick mini-app on GitHub Pages.

ia · build · claude · 3 min
Jun 15, 2026

OpenRouter Fusion: a panel of models beats the frontier model

OpenRouter just shipped Fusion: instead of querying one model, you query several in parallel and a judge synthesizes. The result: three cheap models nearly reach Fable 5's level at half the price. For an indie, that's value right now.

ia · stack · indie · 7 min
Jun 15, 2026

I structured a backend architecture from Réunion Island. The client only ever saw the value.

Freelance developer based in Réunion Island, +2h from Paris, fully remote. Spoiler: the time difference changed nothing. What mattered was the backend architecture I laid down for a team that had to scale — DDD, microservices decomposition, guidelines that hold.

stack · process · 5 min
Jun 8, 2026

Flue: the agent harness, but as a framework (and it's the Astro team)

The Astro team ships "The Agent Harness Framework." Flue takes the harness from the previous article and turns it into a real framework. I ported our profile-analysis agent to it to see.

ia · claude · stack · 5 min