Joao Carvalho
Director of Product, Constellation
Joao Carvalho is Director of Product at Constellation, where he works on Gate.
Posts
N° 10 · September 1, 2026
Building a product in the age of AI
How two AI agents help me keep a real side project moving after the first version ships.
N° 03 · July 23, 2026AI subscriptions will end
Most of us met AI through a flat monthly subscription, and that price was never the real cost of the compute underneath it. As work shifts from chat to agents, usage varies by orders of magnitude and serious AI spend moves to metered billing whatever the plan is called. On why the subscription era is ending, and how compression, caching, and model choice keep the bill from running away with the work.