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GPT-6 Luna had the best call-routing accuracy of 6 models I tested on 1,000 support chats, and it was the cheapest LLM

Benchmark: 6 models labeling the same 1,000 customer-service chats (ABCD dataset), 7 questions each, scored against system logs. Default settings, same prompt, strict structured output. GPT-6 Luna: Best zero-shot model on "why did the customer reach out" (86.6%) and on the 55-option intent question…

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  1. 2026-10-16 02:29 · r/OpenAI
    GPT-6 Luna had the best call-routing accuracy of 6 models I tested on 1,000 support chats, and it was the cheapest LLM

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