Google shipped Gemini 3.8 Live on September 15 and Gemini 3.8 Flash TTS on September 23, 2026 — together, they rewrite the cost curve for marketing audio. A 10-minute Live voice call runs about $0.23; an hour of Flash TTS voiceover runs about $0.81. A week in production: 14 podcast clips, 6 ad voiceovers, 3 landing-page voice agents, and a brand-voice NotebookLM Audio Overview for $1.40 total. Five jobs the combo earns in a marketer's stack, three to keep elsewhere, and one routing principle that holds.
