Google Gemini Omni Flash Review — Conversational Video Editing, Avatar Mode, and the API Builders Are Still Waiting For

Google Gemini Omni Flash is a new any-to-any generative model launched at Google I/O on May 19, 2026. It accepts text, images, audio, and existing video as input and generates 10-second physics-aware video clips with conversational editing in plain English — preserving scene consistency across multi-turn revisions where prior models drifted. Avatar mode ships with biometric enrollment requirements. Audio speech editing is deliberately held back. The developer API is not yet available; treat it as a Q3 2026 planning item. We review what Omni Flash actually shipped, what's held back, how it differs from Veo 3.1, and what builders should do right now.