Anyone can build software with AI. And then?
Raising the wall got cheap. What got expensive is the foundation, the plumbing and a street address — and nobody asks for those in a prompt.
Fabricio Costa
Artificial intelligence, in practice
Articles on AI for the people who build with it.
Artificial intelligence explained by someone who builds it.
Latest articles
How I build an AI agent from scratch: soul, memory and the bill at month end
An agent is not a chat with a pretty prompt: it is four layers of files — and a fifth nobody puts in the spreadsheet, the cost. T…
Como será trabalhar em 2035 se a Inteligência Artificial continuar evoluindo nesse ritmo
Nem utopia sem trabalho, nem desemprego em massa. O cenário mais provável é mais chato e mais interessante: todo mundo virando ge…
O Desenvolvedor Não Vai Acabar: A IA Está Criando uma Nova Categoria de Profissionais de Tecnologia
A Inteligência Artificial não está substituindo os desenvolvedores. Está elevando a profissão para um novo nível, onde entender p…
AI agents in production: what nobody tells you before the first deploy
An agent that dazzles in a demo and an agent that survives production are two different products. This is the map of what changes…
How to build a whole team of AI agents to automate a business
One agent solves a task. Several agents only solve a process if someone draws the org chart — including who reviews whom.
The best AI models available today and when to use each one
GPT, Claude, Gemini, Grok, DeepSeek, Qwen: stop asking which is best and start asking best for what.
The future of developers: less code, more architecture
When writing gets cheap, deciding gets expensive. The centre of gravity of the profession is moving from the editor to the decisi…
IA Open Source ou IA proprietária: qual escolher?
A distância de capacidade encolheu a ponto de a escolha virar, para a maioria dos casos, uma decisão de controle e de custo — não…
Who writes here
Fabricio Costa
Senior software engineer · writes about applied AI
I have worked with software for two decades and I spend my days putting artificial intelligence to do real work. Here I tell you what works, what breaks and why.