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GPT-6 Luna seems weaker than GPT-5.6 Luna on quite a few benchmarks. Am I missing something?

I was updating some benchmark data for GPT-6 Luna and noticed something I didn't expect. On quite a few reported benchmarks, GPT-5.6 Luna actually scores higher than GPT-6 Luna. At first I thought I had bad data, so I checked Artificial Analysis as well. At max reasoning, their overall Intelligence…

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  1. 2026-09-23 12:49 · r/OpenAI
    GPT-6 Luna seems weaker than GPT-5.6 Luna on quite a few benchmarks. Am I missing something?

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