Language learning · Web app
English ↔ Português
The language app I wanted for myself. American English and Brazilian Portuguese, with audio, visual vocabulary, and practice in both directions.
2,774 learning items · Free to use
Projects
Small tools I built because I needed them and could not find the right version.
Open education · EN / PT-BR
AI Academy
A course on how language models and the systems around them work. From the basic mechanism to RAG, infrastructure, and implementation.
5 courses · 103 lessons · 172 primary sources
AI workflows · Open source
Agent Run Checkpoints
A public companion to my notes on bounded AI agents: task contracts and checkpoints for keeping agent work traceable.
Work in progress · Node.js