Gemini Omni Flash: Veo 3.1 Python Tutorial 2026

Google's Gemini Omni Flash was the loudest moment at I/O 2026: an any-to-any model that takes text, image, audio or video in and returns video out, with conversational follow-ups like "make the lighting warmer" or "slow down the last three seconds." The consumer app shipped first. Developer API access is rolling out under the veo-3.1-generate-preview family in the google-genai SDK — and that is what this guide teaches you to use today.

By the end you will have a Python pipeline that does four real things: text-to-video, image-to-video (Nano Banana 2 → Veo 3.1), first-frame + last-frame interpolation, and a three-shot teaser stitched together as one MP4. Every snippet matches the published google-genai method signatures, and the gotchas section flags the four things that quietly burn budget or get your job blocked.