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Overview
CUA-S1 Forms is the first open-weight System One specialist model in the cua CUA-S1 family — a 706K-parameter model for form-filling decisions in a single forward pass during computer-use agent workflows.
Key Points
- MIT license; weights on Hugging Face (2026-09-19-cua-s1-huggingface-model-card)
- Part of broader CUA computer-use infrastructure (drivers, fleets, benchmarks)