GPT-5.6 Sol Pro Aces Benchmark
jdjohnson · x · 2026-07-17
Shared reports indicate that GPT-5.6 Sol Pro scored 91/99 on prinzbench, nearly maxing out the benchmark.
Additional details:
- Two questions in prinzbench, worth a total of 6 points, remain unsolved by any model to date. Excluding these, GPT-5.6 Sol Pro actually solved 91 out of 93 available questions.
- OpenAI Pro series scores on this benchmark are as follows:
- GPT-5.4 Pro (Extended): 79/99
- GPT-5.5 Pro (Extended): 82/99
- GPT-5.6 Sol Pro: 91/99
- The original author noted that the benchmark was "saturated" just six months after its release in January 2026, highlighting the rapid pace of progress.
- They also mentioned that future OpenAI Pro models will no longer be compared using this benchmark in the same way.
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