OpenAI: GPT-5 Nano

OpenAI's GPT-5 Nano, released August 7, 2025, is positioned as a lightweight, fast variant optimized for developer tools and low-latency applications. It demonstrates competitive response times, ranking in the 43rd percentile for speed across benchmarks, and offers competitive pricing, placing in the 50th percentile. Notably, GPT-5 Nano exhibits exceptional reliability with a 100% success rate across all benchmarks, indicating robust technical stability. The model showcases remarkable accuracy in General Knowledge and Hallucinations benchmarks, achieving perfect scores and often being the most accurate model at its price point and speed. It also performs strongly in Email Classification (99% accuracy, 88th percentile), Reasoning (96% accuracy, 84th percentile), Mathematics (94% accuracy, 82nd percentile), and Coding (93% accuracy, 82nd percentile). While its Ethics performance is moderate at 98% accuracy (39th percentile), its Instruction Following accuracy is a relative weakness at 69% (73rd percentile), suggesting areas for improvement in complex multi-step directives. Overall, GPT-5 Nano excels in factual recall and classification tasks, making it a strong contender for applications requiring high accuracy and reliability in real-time environments.