Opinion: models like Jev are decomposing the agent loop into a composable glue layer

Josh Rosen @JoshARosenOriginally posted 2026.09.23

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TypeSafe is pushing hard on this idea of “composable AI” but LangChain has embodied composable AI since day one. With new models like Jev, we’re decomposing the agent loop and moving more intelligence into the glue that holds it all together. Watch this space.

This post quotes another post: “Video walkthrough of Jev and System One models in an agent harness”