LMArena CEO Reveals Favorite Underrated Model: GPT-5.6 Sol

arena · x · 2026-08-05

When asked about his favorite underrated model, LMArena CEO @mlangelopoulos revealed he frequently uses GPT-5.6 Sol (specifically the xHigh mode).

He explained that due to his background in statistics, he often tackles advanced math problems, even proving theorems with his wife, who is also a statistician. For these complex mathematical reasoning tasks, Sol demonstrates exceptional capability, making it his go-to model for deep work despite not being highly reflected on general leaderboards.

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