●ARGON — gemini-4-argon is generally available as of 10/13, aimed at complex coding, agents, math and science●DEEP RES — deep-research-pro-preview-12-2025 shuts down 10/23, 6 days left. 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 — deep-research-pro-preview-12-2025 shuts down 10/23, 6 days left. 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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gemini-api⁶ gemini⁵ RAG⁴ Gemini API³ vector-search³ rag³ indie-dev² Python² semantic-search² python² Production² cost-optimization²

⟐ Gemini Dev/2026-03-27Advanced

Building RAG Agents with Gemini × LlamaIndex — From Document Search to Multi-Step Reasoning

A hands-on guide to building high-accuracy RAG agents with Gemini API and LlamaIndex — measured chunk-size comparisons, full hybrid-search and reranking implementations, an evaluation loop, and incremental sync that follows edits and deletions.