OpenAI: GPT-6 Sol (batch)

OpenAI's GPT-6 Sol, released on September 22, 2026, is positioned as a cost-efficient high-end model within the GPT-6 series, designed for demanding professional applications. It consistently performs among the fastest models, ranking in the 74th percentile for speed across five benchmarks. The model also offers competitive pricing, placing in the 44th percentile. Notably, GPT-6 Sol demonstrates exceptional reliability, achieving a perfect 100% success rate across all benchmarks, indicating minimal technical failures and consistent response delivery. In terms of specific performance, GPT-6 Sol excels in acknowledging uncertainty, achieving perfect accuracy (100%) on the Hallucinations (Baseline) test, making it the most accurate model at its price point and among models of comparable speed. It also shows strong capabilities in Reasoning (98% accuracy, 88th percentile) and Mathematics (94% accuracy, 76th percentile), demonstrating robust analytical and problem-solving skills. Its Instruction Following is also commendable at 90% accuracy (94th percentile). The primary area for potential improvement appears to be Email Classification, where it achieved 97% accuracy, placing it in the 36th percentile, suggesting it is less competitive in this specific task compared to other models. Overall, GPT-6 Sol is a highly reliable and fast model with strong reasoning and mathematical prowess, offering excellent value for its performance.