Google’s Gemini 3, Meta’s SAM 3, and Octane AI’s CORE-1 are shaking up creator and marketer workflows. Dive deep on when to escalate to Gemini 3’s Deep Think mode for campaign planning, why SAM 3’s video segmentation is a game-changer but needs smart caching, and how CORE-1’s agentic commerce rewires ecom experiences with real guardrails. Cuts through the hype about open vs closed models, API orchestration, ROI tracking, and compliance signals. Human-in-the-loop tricks included. Actionable advice for plugging AI into your media, marketing, and ecommerce stack—without burning your ad budget on unnecessary compute.