●ARGON — gemini-4-argon is generally available as of 10/13, aimed at complex coding, agents, math and science●DEEP RES — The old Deep Research agent shut down on 10/23. If calls fail, move to deep-research-preview-04-2026●NANO — gemini-nano-banana-2.1 is GA (10/06). gemini-3.1-flash-image is deprecated with no shutdown date yet●MCP — One write-up cut an 85,000-token tool result to 310 tokens by wrapping it in an ADK FunctionTool●FLASH — gemini-3.7-flash and 3.5-flash now route automatically to newer Flash models (10/08)●NEW — Stop Re-Reading Every Crash Report: Gre…●ARGON — gemini-4-argon is generally available as of 10/13, aimed at complex coding, agents, math and science●DEEP RES — The old Deep Research agent shut down on 10/23. If calls fail, move to deep-research-preview-04-2026●NANO — gemini-nano-banana-2.1 is GA (10/06). gemini-3.1-flash-image is deprecated with no shutdown date yet●MCP — One write-up cut an 85,000-token tool result to 310 tokens by wrapping it in an ADK FunctionTool●FLASH — gemini-3.7-flash and 3.5-flash now route automatically to newer Flash models (10/08)●NEW — Stop Re-Reading Every Crash Report: Gre…

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prompt-engineering² gemini-advanced¹ gemini¹

⬡ Gemini Advanced/2026-04-26Intermediate

Writing Gemini Gems Custom Instructions That Actually Behave

The way you structure custom instructions for a Gemini Gem changes its behavior dramatically. Here are the patterns I converged on after several Gems and a lot of iteration.

◉ Gemini Basics/2026-04-11Intermediate

Mastering Gemini Gems Custom Instructions | Advanced Strategies, Templates & Real-World Examples

Advanced guide to Gemini Gems custom instructions. Learn effective instruction writing patterns, multi-role workflows, production templates, and troubleshooting strategies.