●FLASH — Gemini 3.5 Flash is now generally available, billed as the most intelligent model for agentic and coding tasks●TIER — New tiers like 3.1 Pro and 3.1 Flash-Lite are rolling into apps, cloud products, and business tools●PIXEL — The June Pixel Drop adds Gemini music generation, AI video and music creation, and screen-recording reactions●OMNI — Gemini Omni (creation), 3 Deep Think (reasoning), and Deep Research (automation) all advance in parallel●LIVE — Gemini Live's real-time interaction is expanding across Android, Search, YouTube, and connected Google apps●ULTRA — Google AI Ultra offers top model access, Deep Research, Veo 3 video, and a 1M-token context window●FLASH — Gemini 3.5 Flash is now generally available, billed as the most intelligent model for agentic and coding tasks●TIER — New tiers like 3.1 Pro and 3.1 Flash-Lite are rolling into apps, cloud products, and business tools●PIXEL — The June Pixel Drop adds Gemini music generation, AI video and music creation, and screen-recording reactions●OMNI — Gemini Omni (creation), 3 Deep Think (reasoning), and Deep Research (automation) all advance in parallel●LIVE — Gemini Live's real-time interaction is expanding across Android, Search, YouTube, and connected Google apps●ULTRA — Google AI Ultra offers top model access, Deep Research, Veo 3 video, and a 1M-token context window

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model routing

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Gemini 3.5 Flash¹ model selection¹ cost optimization¹ automation¹ indie developer¹ Gemini API¹

⟐ Gemini Dev/2026-06-20Intermediate

Routing Gemini by Pipeline Stage: Draft on Flash, Finish on the Top Tier

A record of reworking which Gemini model handles which stage of an automation pipeline, prompted by the general availability of Gemini 3.5 Flash and the rollout of 3.1 Flash-Lite. Includes a small router that splits work into draft, classify, and finalize stages, how the cost picture changes, and the guardrails I settled on.