Writing — Santiago Paz https://santiagopaz.com/writing/ Essays and notes on building production AI, plus the occasional more personal piece. en santiago.paz.1992@gmail.com (Santiago Paz) Mon, 15 Jun 2026 00:00:00 GMT Evals are the product, not the model https://santiagopaz.com/writing/evals-are-the-product/ https://santiagopaz.com/writing/evals-are-the-product/ Why the evaluation harness — not the base model — decides whether an AI feature ships. engineering Mon, 15 Jun 2026 00:00:00 GMT Leaving Buenos Aires https://santiagopaz.com/writing/leaving-buenos-aires/ https://santiagopaz.com/writing/leaving-buenos-aires/ On moving to Berlin and rebuilding a career from scratch. personal Mon, 02 Feb 2026 00:00:00 GMT