Cost Curves vs Attack Surfaces: Gemini 3.1 Flash‑Lite, GPT‑5.3 Instant, and the ICS Security Wake-Up Call

import Tabs from ' @theme /Tabs'; import TabItem from ' @theme /TabItem'; import TOCInline from ' @theme /TOCInline'; The signal this week was simple: model pricing is collapsing, agent tooling is becoming productized, and security is still losing to fundamentals. Cheap inference and better chat UX are real. So are unauthenticated critical functions in live industrial systems, which is a far bigger story than any model demo. Model Economics: Gemini 3.1 Flash-Lite, GPT-5.3 Instant, Node 25.8.0 Google shipped Gemini 3.1 Flash-Lite as the low-cost throughput play, and the price delta matters more than most benchmark screenshots. If input is $0.25/M and output is $1.5/M, architecture decisions change: more aggressive fan-out, more retries, more eval runs, less guilt. "Gemini 3.1 Flash-Lite is our fastest and most cost-efficient Gemini 3 series model yet." — Google, Gemini 3.1 Flash-Lite Item What changed Why it matters in production Gemini 3.1 Flash-Lite Lower-cost Flash-Lite refresh with