# TypeSafe AI Jev middleware can route models for LangChain managed deep agents

Nathan Drezner says TypeSafe AI's Jev middleware can be used with LangChain managed deep agents for model routing. Users define routes, and Jev handles model selection.

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Source: nathan drezner · Published 9/21/2026, 10:43:28

Nathan Drezner (@ndrezn) said that people using **managed deep agents** in LangChain can try TypeSafe AI's (@typesafeai) **Jev middleware** for model routing.

According to the post, users define their routes and Jev handles model selection.

Tags: LangChain, TypeSafe AI, Jev, Model Routing

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