AICUA-S1-FORMS goes open source as the first model in the CUA-S1 family
Cua describes CUA-S1 as a family of small, specialized “System One” models built for computer use.
TLDR
Cua introduced its CUA-S1 model family on September 18, 2026, describing the models as small, specialized and built for computer use. It announced that it was open-sourcing CUA-S1-FORMS, the first model in the family, and shared a GitHub repository.
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CUA-S1-FORMS goes open source as the first model in the CUA-S1 family
Cua describes CUA-S1 as a family of small, specialized “System One” models built for computer use.