Gemini 3 API Secrets: How Thinking Levels & Thought Signatures Boost AI Accuracy

Inside Gemini 3: How Thinking Levels, Thought Signatures and Media Controls Give You Production-Grade Reasoning Power This article answers one question: “What exactly changed in the Gemini API for Gemini 3, and how can I ship those features today without reading another 50-page doc?” What this guide covers (and why you should care) Gemini 3 is now the default engine behind Google AI Studio and the production Gemini API. The update ships three big levers you can pull—thinking depth, media resolution, and chain-of-thought signatures—plus cheaper web-grounding and native JSON output. Used together they let you tune cost, latency and accuracy …