Gemini 3 Flash is Google's high-speed reasoning model that combines near-Pro-level intelligence with the speed and cost efficiency of the Flash line. It outperforms Gemini 2.5 Pro on most benchmarks while running 3× faster and at a fraction of the cost, scoring 78% on SWE-bench Verified. The model supports a 1M-token context window, multimodal inputs (text, images, audio, video, PDFs), configurable thinking levels, and automatic context caching, making it well-suited for agentic workflows, multi-turn chat, and interactive coding assistance.