Google: Gemini 3.1 Pro Preview Custom Tools

Google's Gemini 3.1 Pro Preview Custom Tools demonstrates a strong performance profile, particularly excelling in reliability with a perfect 100% success rate across all benchmarks, indicating consistent and usable responses. While its speed performance is moderate, ranking in the 23rd percentile, its pricing tends to be at premium levels, positioned in the 5th percentile. A key strength of this model lies in its exceptional accuracy across several critical domains. It achieved perfect scores in Hallucinations, Reasoning, and Ethics, showcasing its ability to acknowledge uncertainty, solve complex logical problems, and adhere to ethical principles. Furthermore, it exhibits very high accuracy in Instruction Following (94.9%), Coding (96.9%), and Mathematics (95.9%), placing it in the top tier for these categories. Its General Knowledge is also robust at 99.5%. The model's specialized focus on improving tool selection behavior, particularly in preventing the overuse of general bash tools, is a significant advantage for complex multi-tool workflows and coding agents. The only area where its accuracy is not in the top percentiles is Email Classification (97.0%), though this is still a strong result.