LangChain reports Jev matched a human reviewer vs GPT-5.6 and Claude Sonnet 4.6 as agent-eval judges

LangChain said it tested Jev against GPT-5.6 Luna, GPT-5.6 Terra, and Claude Sonnet 4.6 as agent-eval judges.

According to LangChain, Jev matched a human reviewer on every call, with up to 913x lower variance, at 0.44s per call versus 2.16-2.83s for the LLMs. It reported the cost of the full run as $0.34 with Jev and $28.17 with Claude Sonnet 4.6.