LangChain · AI

Building a Harness with Jev

Learn all about Jev, a new System One model from TypeSafe AI, and how you can use it in your agent harness. Jev is up to 200x faster and 400x cheaper than LLMs on classification style tasks, which makes it great for applications like model routing and "jev as a judge" online evals. Chapters: 0:00 Building a harness with a new model called Jev 0:12 The agent loop everyone already knows 1:02 Why tool calling and structured outputs exist 1:38 What J

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