GPT-5.6 Falls Behind GPT-5.5 on SimpleBench

burny_tech · x · 2026-07-11

It was pointed out that GPT-5.6 Sol Pro performs worse than GPT-5.5 on SimpleBench, describing this capability as "jagged intelligence."

This is a brief model evaluation/comparison opinion without further elaboration, but the core message: the new version underperforms the previous one on a certain benchmark.

Related event: GPT-5.6 and Grok-4.5 Spark Debate Over SimpleBench Performance(2 posts)→

Original post →

More from Models

Models channel →