OpenAI: GPT-5.2

GPT-5.2, released by OpenAI on December 10, 2025, is a frontier-grade model designed for broad task coverage with a substantial 400,000 context length. It consistently ranks among the fastest models and offers highly competitive pricing, both achieving an Infinityth percentile across 8 benchmarks. The model demonstrates exceptional reliability with a 100% success rate across all benchmarks, indicating minimal technical failures. Performance across categories highlights several strengths. GPT-5.2 achieved perfect accuracy in General Knowledge and Ethics, with the former also being the most accurate at its price point and speed. Its Coding performance is strong at 96% accuracy (97th percentile), and Instruction Following is robust at 86% (95th percentile). While Mathematics reached 92% accuracy, its percentile ranking (68th) suggests room for improvement compared to top performers in that specific domain. A notable weakness is its 0.0% accuracy in the Hallucinations (Baseline) test, indicating it does not appropriately acknowledge uncertainty by selecting "I don't know" for fictional concepts. Reasoning and Email Classification show moderate performance at 76% and 98% accuracy, respectively. The model's adaptive reasoning and improved agentic capabilities are evident in its overall strong performance across diverse workloads.