The Collider: Open Source, Closed Source, Open Weights

Choosing an AI model is no longer just about picking the one at the top of a benchmark. The Collider brings together builders and engineering leaders to discuss the real trade-offs between open-source, closed-source, and open-weight models — from infrastructure and capacity planning to cost, control, reliability, and choosing the right level of capability for the job. We’ll hear from: Helder Vasconcelos — CTO & Co-Founder at LayerXModel Selection Is Capacity Planning Ricard Castro — Director of Engineering at FanDuelYou Don't Need Frontier AI for Everything The sessions will be followed by a moderated roundtable with Filipe Macedo, Founder of API, exploring one central question: How do you choose the model that actually fits? Expect a practical discussion around: Open vs. closed vs. open-weight models Infrastructure, latency and operating costs Control, deployment and reliability When smaller models outperform the “frontier by default” approach How model choice becomes a product and engineering decision 📍 Vertical Dom Henrique, Porto📅 15 October 2026🕡 18:30–20:00🌍 Event in English Built for AI/software engineers, technical founders, product leaders, and infrastructure, platform and data teams making real model decisions.