LangChain model-routing middleware

LangChain TypeSafe middleware: Jev assesses the user message and selects fast vs powerful model for the run.

Category: routing
Primitives: choice
Source type: docs

Date: 2026-09-17

Citations

• https://www.langchain.com/blog/building-a-harness-with-jev

Related docs

• https://docs.typesafe.ai/patterns/intent-routing.md