Open-source decision model SemIf lands on LangSmith Gateway free, runs locally on a 3090
hwchase17 · x · 2026-09-22
LangChain's Harrison Chase amplifies SemIf (formerly OpenJev by TheoLeeCJ), an open-source 'semantic ifs' decision model now served free on LangSmith Gateway for a week, compatible with the TypeSafe SDK — just change a string. It runs a frozen 4B model on a single 3090 to handle small agent decisions (routing, retries, evidence checks) without generating parseable text, has 3k GitHub stars and a browser demo.
Related event: LangChain Launches Decision Models with Open-Source SemIf Free for a Week(7 posts)→
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