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Visit Show HN: CUA-S1 – A System One Model for Computer Use ↗
Hello HN! We're Dillon and Francesco from Cua.<p>We were wondering how many computer use tasks actually need a full general purpose LLM (e.g. gpt-6-astra, claude-opus-5 etc.) to think through all their decisions and steps. Some tasks require thinking about a plan, exploring different paths, recovering from failure. Other tasks are a question of making local decisions, like this value should go in this box, or should I check this box, or this element should be ignored.<p>We wondered how far we could go with a small model trained to only make these kinds of decisions.<p>Our inspiration was Typesafe's Jev and its System One Model framing. This is a nod to the dichotomy between thinking quickly, automatically, and intuitively (system 1) vs. thinking slowly, analytically (system 2), as described by Daniel Kahneman.<p>The interesting question for us was: what happens if you give a model an interface of current context, and a set of possible choices, and you ask it to return a proba
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