OpenAI: GPT-6 Astra Pro (batch)

GPT-6 Astra Pro, released on September 4, 2026, is a specialized version of GPT-6 Astra optimized for complex tasks through its `reasoning.mode` set to `pro`. The model demonstrates competitive response times, ranking in the 40th percentile across benchmarks. However, it is positioned at a premium price point, ranking in the 2nd percentile for cost. A significant strength is its exceptional reliability, achieving a 100% success rate across all benchmarks, indicating consistent and usable responses. In terms of performance, GPT-6 Astra Pro excels in tasks requiring precision and logical deduction. It achieved perfect accuracy in both Hallucinations (Baseline) and Reasoning (Baseline), notably being the most accurate and fastest at its price point in these categories. Its Instruction Following capabilities are strong at 92.0% accuracy, placing it in the 96th percentile. While its General Knowledge (96.5%) and Ethics (99.0%) scores are high, their percentile rankings (38th and 42nd respectively) suggest a competitive but not leading position in these areas relative to other models. Coding and Mathematics performance are solid, with accuracies of 93.0% in both. The model's primary weakness lies in its premium pricing across all categories, which may limit its cost-effectiveness for certain applications despite its high performance.