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How to Use Jev with LangChain for Fast Agent Safety Checks and Typed Decisions

Last Updated: October 6th, 2026

Watch: Jev in an agent loop by Sam Witteveen TypeSafe positions Jev as a System One model. Instead of generating text token by token the way a general LLM does, it accepts unstructured program state plus a list of typed questions, and it returns typed answers with calibrated probabilities in one…