GEMINI 3.5 FLASH DEVELOPER GUIDE

Summary from the TLDR newsletter

Gemini 3.5 Flash is now generally available. This guide contains an overview of improvements, API changes, and migration guidance for the model. Gemini 3.5 Flash features Thinking, structured outputs with tools, multimodal function responses, code execution with images, and combined tool use, but not Computer Use. It delivers sustained frontier performance in agentic execution, coding, and long-horizon tasks at scale.