OpenAI: GPT-5.4

OpenAI's GPT-5.4, a unified frontier model released on March 5, 2026, demonstrates robust performance across a wide array of tasks, leveraging its expansive 1M+ token context window for high-context reasoning and multimodal analysis. The model consistently ranks among the fastest, achieving the 87th percentile in speed across eight benchmarks, while offering moderate pricing at the 25th percentile. Its reliability is exceptional, boasting a 100% success rate across all benchmarks, indicating minimal technical failures. GPT-5.4 exhibits perfect accuracy in Hallucinations, General Knowledge, and Ethics benchmarks, often achieving this with competitive cost and speed. It shows strong capabilities in Instruction Following (84% accuracy) and Reasoning (88% accuracy), highlighting its ability to handle complex multi-step workflows. In Coding, it achieves 88% accuracy, positioning it as a strong contender for software engineering tasks, and is noted as the most accurate among models of its speed. Email Classification and Mathematics also show solid performance at 99% and 90% accuracy, respectively. Its key strengths lie in its perfect accuracy on critical benchmarks, high reliability, and impressive speed, making it a versatile and efficient solution for both general-purpose and specialized applications.