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Carlos Millán

Carlos is a computer science engineer from the Technical University of Valencia, where he is currently pursuing an MsC in computer science. Having a particular interest in robotics and artificial intelligence, and being substantially self-taught, Carlos provides technical support for all ongoing projects.

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How to Build an AI Agent in 2026: A Practical Guide

A practical 2026 guide to building AI agents that survive production. Opinionated framework comparison (Pydantic AI, LangGraph, build-your-own, Helix), two worked examples in code and in markdown, the harness, environment, store, and evaluation patterns.

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RAG vs Fine-Tuning in 2026: A Decision Framework for LLM Teams

An opinionated 2026 decision framework for choosing between retrieval-augmented generation (RAG), fine-tuning, and hybrid approaches for LLM applications. Decision tree, comparison table, and named tooling.

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