xAI: Grok 4

Grok 4, xAI's latest reasoning model, demonstrates exceptional reliability with a 100% success rate across all benchmarks, indicating consistent and usable responses. However, its speed performance tends to be slower, ranking in the 16th percentile, and it is positioned at premium pricing levels, ranking in the 2nd percentile. The model exhibits outstanding accuracy in several critical areas. It achieved perfect scores in Hallucinations, General Knowledge, Email Classification, and Reasoning, highlighting its strong foundational understanding and logical processing capabilities. Notably, it is the most accurate model at its price point and among models of similar speed for these categories. Grok 4 also performs very well in Coding (93.0% accuracy) and Mathematics (94.5% accuracy), placing it in the 78th and 85th percentiles respectively, despite the high cost associated with these tasks. Its Instruction Following accuracy is solid at 78.0%. The primary weakness appears to be its high cost and longer response times, particularly for complex tasks like Mathematics and Coding.