Always-on synchronized audio
Every clip ships with generated sound — ambience, effects, speech. Steer it with an "Audio:" line in the prompt.
Model · Google Gemini Omni Flash
Gemini Omni Flash — AI video with sound, from $0.30 a clip
Google's world model for short-form video: every clip arrives with synchronized audio, physics-aware motion, and editing by conversation — describe a change and the scene regenerates. You set the length exactly: 3 to 10 seconds, 720p, 16:9 or vertical 9:16 for Shorts and Reels. $0.10 per second ($0.30–1.00 a clip), paid with crypto. No subscription.
01What it is
What is Gemini Omni Flash?
Gemini Omni Flash is the first model in Google's Gemini Omni family — a world model that reasons about a scene the way a physics engine does, then renders it as video. You send text, an image, or a previous result; it returns a 720p clip at 24 fps with native synchronized audio, exactly as long as you asked (3 to 10 seconds), — ambience, effects, even speech — generated in the same pass as the pixels, not added afterwards. Google shipped it to the Gemini app, Flow and YouTube Shorts in May 2026 and opened the API (gemini-omni-flash-preview) on June 30, 2026. On BananaBanana it runs in production next to the Veo 3.1 family: same balance, $0.10 per second of video ($0.30–1.00 per clip), paid with crypto.
Why is it built for Shorts, Reels and TikTok?
Short-form video needs three things: sound on by default, believable motion, and fast iteration. Omni Flash delivers all three. Audio is always on — the model decides what the scene should sound like from what it shows. Motion comes from a world model that reasons about the scene: syrup pours, paper drifts, steam rises where it should — usually without prompt gymnastics (for the most physics-critical shots, Veo 3.1 is still the safer render). And instead of re-prompting from scratch, you refine by conversation — “make it dusk”, “add rain on the window” — while the model keeps the character, lighting and camera consistent. The prompt is also the control panel: left alone the model likes to cut between shots, so you ask for a single unbroken take, mark the beats as [0-3s] ranges, and quote any text that should appear on screen. Generate in vertical 9:16 and the clip drops straight into Shorts, Reels or TikTok with no crop.
02Capabilities
What Omni Flash can do
Conversational editing
Describe a change and the scene regenerates with character, lighting and camera intact. Edits chain turn after turn — and any finished video, even a Veo clip or your own upload, can be sent back in for a video-to-video edit.
Physics-aware world model
The model reasons about the scene like a physics engine — liquids, smoke and cloth usually behave plausibly on the first try.
Image-to-video
Any photo becomes the opening frame — your own generation or an upload — while the prompt describes the motion and the soundscape. It can be combined with reference images in the same request.
Subject references
Up to 10 reference images keep characters or products consistent in a completely new scene — and they can be combined with a starting frame.
You set format and length
Pick the aspect ratio per generation — vertical output is framed for Shorts, Reels and TikTok — and the exact clip length, 3 to 10 whole seconds, paying $0.10 for each of them.
03Limitations
What it can't do — honestly
These are limits of Google's API itself, not of our integration — and they matter before you spend a dollar. 720p only: there is no 1080p or 4K switch; if you need higher resolution, use Veo 3.1. Ten seconds maximum: you set the length between 3 and 10 seconds, but nothing longer — and no Extend, so unlike Veo a clip can't be chained past its 10 seconds. Editing changes a scene, it never lengthens it: an edited clip always comes back exactly as long as its source.
Also missing from the preview API: seeds (the same seed and prompt still give a different take), negative-prompt parameters, prompt enhancement, multiple samples per request, and switching the audio off. If any of those are dealbreakers, the Veo 3.1 family covers them — same balance, same generator.
04How it works
From prompt to clip in minutes
Sign up free
Email and password — no credit card, no Google account, $0.20 free starting balance.
Top up with crypto
From $1 in USDT, USDC, BTC, ETH, SOL, TON and more. +5% bonus from $50, +10% from $100.
Generate, then talk to it
Write the prompt (add an "Audio:" line), pick 16:9 or 9:16 and the exact length, generate from $0.30 — then refine by describing changes.
05Pricing
Priced by the second, audio included
| Model | Price per clip | Duration | Resolution | Audio |
|---|---|---|---|---|
| Gemini Omni Flash$0.10 per second | $0.30–1.00 | 3–10 s (you pick) | 720p | always on |
| Veo 3.1 Fastwith audio | $0.50–$1.00 | 4–8 s (you pick) | up to 4K | optional |
| Veo 3.1with audio | $1.50–$3.00 | 4–8 s (you pick) | up to 4K | optional |
Veo prices shown for 720p/1080p; 4K costs more. Omni Flash is billed $0.10 per second of output, so a clip costs $0.30–1.00; an edit is a new generation of the same length as its source, at the same rate. Full tables on the pricing page.
Compare every model on the full pricing page — or read the hands-on Omni Flash API review before you spend.
06Learn more
Guides from the blog
Gemini Omni Flash API Review: What the Preview Really Does
Hands-on review: what the API actually supports, what stays exclusive to Flow, real per-clip costs.
Read the guideVeo 3.1 Prompt Guide: Write Prompts That Actually Work
The seven-part prompt structure, camera motion terms and audio cues.
Read the guideAI Image to Video: Turn Any Photo into a Moving Clip
First frames, end frames, loops and extended videos.
Read the guide07FAQ
Gemini Omni Flash, answered
What is Gemini Omni Flash?
Gemini Omni Flash is the first model in Google's Gemini Omni family — a world model that turns text, images or a previous clip into a short 720p video with synchronized sound generated in the same pass. It shipped to consumers in May 2026 and reached the API as gemini-omni-flash-preview on June 30, 2026. On BananaBanana it runs in production alongside the Veo 3.1 family.
How much does a Gemini Omni Flash video cost?
$0.10 per second of video on BananaBanana — $0.30 for a 3-second clip, $1.00 for the full 10 seconds, audio included, no subscription. An edit of an existing clip is a new generation of the same length, at the same rate. You top up with crypto from $1 and pay per clip.
Does Gemini Omni Flash generate sound?
Yes — always. Every clip ships with native synchronized audio: ambience, effects, even speech if you ask. You cannot turn it off; the only control is text, so describe the soundscape in an "Audio:" line inside the prompt.
Can I choose the clip length or resolution?
The length, yes: any whole number of seconds from 3 to 10, and you pay $0.10 for each of them. Resolution, no — output is 720p at 24 fps only. You also choose the aspect ratio: 16:9 for widescreen or 9:16 vertical for Shorts, Reels and TikTok. One exception: an edited clip inherits the length of its source, because the model cannot stretch or shorten a video.
How does conversational editing work?
Generate a clip, then describe the change — "make it snow", "swap the mug for a glass" — and Omni Flash regenerates the scene while keeping character, lighting and camera consistent. Edits chain on top of each other. You can also edit a video it didn't make: send in any finished clip, including a Veo generation or your own upload, and it comes back restyled at the same length. Each edit is a normal generation at $0.10 per second. This replaces Veo-style Extend, which Omni doesn't support.
Should I use Gemini Omni Flash or Veo 3.1?
Pick Omni Flash when sound matters and the format is short vertical or social video: audio is always on, physics look right, and iteration happens by conversation at $0.10 a second ($0.30–1.00 a clip). Pick Veo 3.1 when you need control — exact 4/6/7/8-second durations, resolutions up to 4K, optional audio, first/last frames and extensions to 148 seconds.
Do I need a Google account or credit card?
No. BananaBanana accepts crypto only — USDT, USDC, BTC, ETH, SOL, TON and other major coins, minimum top-up $1. Sign up with an email, top up, generate; unused balance never expires.
Make your first clip with sound
Gemini Omni Flash — $0.30–1.00 per clip with always-on audio, billed $0.10 a second; Veo 3.1 from $0.10. Pay as you go with crypto, no subscription, free $0.20 to start.