Tag: agent harness
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The System One Split: Jev, CUA-S1-FORMS, and the Decision Layer Coming Beneath the Agent Loop
by Chris DePuy / September 20, 2026 Between September 15 and 18, four related releases arrived within four days. TypeSafe AI emerged from two years of stealth with Jev, a model class the company calls System One, LangChain published an integration guide showing Jev wired into agent middleware, Browser Use open-sourced Jev Ultrafast, a browser-agent…