OpenAI: GPT-5.2 Chat

OpenAI's GPT-5.2 Chat, released on December 10, 2025, is designed as a fast, lightweight model optimized for low-latency chat and interactive workloads. It performs among the fastest models, ranking in the 62nd percentile for speed across eight benchmarks. However, it tends to be positioned at premium pricing levels, falling into the 17th percentile for cost. A significant strength is its exceptional reliability, demonstrating a perfect 100% success rate across all benchmarks, indicating consistent and usable responses. The model exhibits perfect accuracy in both Hallucinations (100%) and General Knowledge (100%), showcasing its ability to appropriately acknowledge uncertainty and its broad factual understanding. It also excels in Instruction Following (91% accuracy, 96th percentile) and Coding (96% accuracy, 96th percentile), highlighting its precision and strong technical capabilities. While its Mathematics performance is robust at 94% accuracy (80th percentile), its Reasoning score of 78% (57th percentile) suggests room for improvement in complex, multi-step problem-solving compared to its other high-performing areas. Its adaptive reasoning mechanism appears effective in boosting accuracy on harder queries without significantly impacting typical conversation speed.