Gemini 3.5 Flash Developer Guide

Gemini 3.5 Flash is generally available (GA), stable, and ready for scaled production use. As our most intelligent Flash model, it delivers sustained frontier performance in agentic execution, coding, and long-horizon tasks at scale. This guide contains an overview of improvements, API changes, and migration guidance for Gemini 3.5 Flash. New model Model Model ID Description Gemini 3.5 Flash gemini-3.5-flash Our most intelligent model for sustained frontier performance in agentic and coding tasks.