# LangChain makes SemIf free for the next week in LangSmith LLM Gateway

LangChain said it is making SemIf, an open-source decision model, free for the next week in LangSmith LLM Gateway. In the quoted post, Jacob Lee also said SemIf is being served free for the next week and is compatible with the TypeSafe SDK.

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Source: LangChain · Published 9/21/2026, 09:43:55

LangChain said it is making **SemIf**, an open-source decision model, **free for the next week** in LangSmith LLM Gateway.

The announcement quotes Jacob Lee (@Hacubu), who wrote that decision models are becoming a first-class part of the LangSmith Gateway and that SemIf is being served free for the next week. Lee also said it is compatible with the TypeSafe SDK by changing a string.

Tags: LangChain, LangSmith, SemIf, LLM Gateway

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