Gemini 3.5 Flash for Vision: Evaluation and Benchmarks

Google's Gemini 3.5 Flash, unveiled at Google I/O 2026, represents a significant advancement in visual reasoning models, achieving the highest performance on the Roboflow Vision Evals leaderboard. It surpasses its predecessor, Gemini 3.1 Pro, especially in counting and spatial reasoning, while operating approximately four times faster and at roughly half the cost of similar frontier models. Designed for agentic, multi-step workflows, Gemini 3.5 Flash is integrated into various platforms, including the Gemini API and Roboflow Workflows, where it supports high-speed document and chart understanding, and tool-using vision agents. Despite its strengths in multimodal reasoning and lower operational costs, it may not be suitable for real-time video processing or tasks requiring precise localization where specialized models, like RF-DETR, remain superior. By reducing the economic and latency barriers, Gemini 3.5 Flash is poised to facilitate a new generation of practical, scalable vision AI applications.