New Gemini API updates for Gemini 3- Google Developers Blog

Introduced Gemini 3 via the Gemini API with updates including: a new `thinking_level` parameter for controlling model reasoning depth, a `media_resolution` parameter for granular control over multimodal vision processing, "Thought Signatures" to maintain reasoning chains for agentic workflows and image generation, and the ability to combine Grounding with Google Search and URL context for structured outputs. Updated pricing for Grounding with Google Search to a usage-based model. Provided best practices for using Gemini 3 Pro and a System Instructions template for agentic coding.