New: GPT Image 2.6 is now live on KIE →
Gemini Omni 1.2 Flash
google / gemini-omni-flash-1-2-extend
Commercial usePart of the Google API family — compare all Google models →

Gemini Omni 1.2 Flash is Google's updated Gemini Omni Flash model for generating and editing video with native, synchronized audio from text, image and video inputs. Google says it extends clips to 15 seconds, adds multi-turn conversational editing and follows references more closely than Gemini Omni 1.1 Flash.

Model Type:
Pricing: - 360P: 4 credits/s ($0.02) - 720P: 9 credits/s ($0.045) Billed only for the added seconds (duration). Source videos must be 360P or 720P. High-tier top-ups include 10% bonus credits, making the effective cost approximately 90% of the listed prices.
Input

The source task ID to extend. Must be a successful google/gemini-omni-flash-1-2 or google/gemini-omni-flash-1-2-extend task under your account. Source video must be 360p or 720p (1080p / 4k not supported) and no longer than 15 seconds.

Describe what happens next: how the action, camera, environment and sound continue. Write anything you don't want directly into the prompt.

0/20000

How many seconds to extend (integer, 3–10). This is the length of the new part, not the total video length.

Click to upload or drag and drop

Supported formats: PNG, JPEG, WEBP Maximum file size: 20MB; Maximum files: 3

Optional reference images (up to 3) to keep characters and objects consistent. Supports png / jpeg / webp, max 20MB each.

Output
output typevideo

no output

README

Complete guide to using Gemini Omni 1.2 Flash

Gemini Omni 1.2 Flash API for 15-Second Video with Native Audio

Gemini Omni 1.2 Flash generates and edits video with synchronized speech, music and sound effects from text, images and video. Google says it produces clips of up to 15 seconds, lets you refine the same clip over several conversational turns and keeps faces, products and brand colors consistent across shots. Output runs from 360p drafts to 4K upscales in 16:9 or 9:16.
New to Gemini Omni 1.2 Flash? Read what it is and how it compares →
Gemini Omni 1.2 Flash API for 15-Second Video with Native Audio

What's New in Gemini Omni 1.2 Flash

Google released Gemini Omni 1.2 Flash on November 5, 2026, as an update to Gemini Omni 1.1 Flash. These are the changes Google describes.
Clips and Edits of Up to 15 Seconds
01

Clips and Edits of Up to 15 Seconds

Generation and editing now run up to 15 seconds, up from 10 seconds with Gemini Omni 1.1 Flash, according to Google. You set the length from 3 to 15 seconds in one-second steps. The model is part of the Gemini Omni family of video models.
Multi-Turn Conversational Editing
02

Multi-Turn Conversational Editing

Refine the same clip turn by turn instead of starting over: swap a product or background, or change the lighting, weather, camera angle or aspect ratio. Google says editing works across full 15-second clips.
Closer Reference Following
03

Closer Reference Following

Google says the model keeps faces, garments, packaging typography, brand colors, products and characters consistent across shots and camera angles, with less visual drift or morphing in first/last-frame interpolation and clip extension.
Native Audio, Dialogue and Lip-Sync
04

Native Audio, Dialogue and Lip-Sync

Every clip can carry synchronized speech, music and sound effects. Google says dialogue sounds more natural, lip-sync is clearer and the model keeps multiple speakers distinct.
Camera Moves and Multi-Shot Sequences
05

Camera Moves and Multi-Shot Sequences

According to Google, FPV flythroughs, zoom-outs and orbits now run with fewer unwanted jump cuts than in 1.1 Flash. Google's own demo builds a four-shot, 15-second explainer from a single style frame.
Draft at Low Resolution, Upscale the Best Take
06

Draft at Low Resolution, Upscale the Best Take

Output resolutions are 360p, 720p, 1080p and 4K. Google's recommended workflow is to draft at 360p or 720p, then upscale the chosen take to 1080p or 4K.

Gemini Omni 1.2 Flash Specifications

Gemini Omni 1.2 Flash parameters on Kie.ai, from the Kie.ai API docs, alongside the specifications Google publishes for the model.

SpecificationGemini Omni 1.2 Flash
Model on Kie.aigoogle/gemini-omni-flash-1-2
Modes on Kie.aiText to video, reference-image video, first-frame and first/last-frame video, video editing
durationRequired (except for video editing): 3 to 15 seconds; 3 to 10 with first and last frames; video editing follows the input clip
seedsOptional, 10000 to 99999
resolution360p, 720p (default), 1080p, 4k
aspect_ratio16:9 (default), 9:16, auto
image_urlsUp to 6 reference images, each up to 20 MB
video_list1 video for editing, MP4 recommended, up to 15 seconds
first_frame_url / last_frame_urlOpening frame (duration 3 to 15), plus an optional closing frame (duration 3 to 10 with both); not combined with image_urls or video_list
AudioGenerated speech, music and sound effects; audio is not a general input
Outputs per request1
ProvenanceImperceptible SynthID watermark on every output; C2PA Content Credentials supported

How to Work With Gemini Omni 1.2 Flash

This workflow for Gemini Omni 1.2 video generation follows Google's draft-then-upscale guidance and the model's published features.
  1. 1

    Step 1: Draft at 360p or 720p

    Generate several short low-resolution takes from a text prompt, a style frame or reference images, and choose the one with the right composition and motion.
  2. 2

    Step 2: Lock Your References

    Add product shots, character images or packaging (up to 6 reference images) to your prompts so faces, typography and brand colors stay consistent across shots and drafts.
  3. 3

    Step 3: Refine in Conversational Turns

    Edit the chosen clip turn by turn: change the background, lighting, weather or camera angle, or switch between 16:9 and 9:16, without regenerating from scratch.
  4. 4

    Step 4: Render the Final Take

    Set resolution to 1080p or 4k for the final render, or pass the chosen clip of up to 15 seconds in video_list to refine it with an edit.

What You Can Build With Gemini Omni 1.2 Flash

New to the model? Start with what Gemini Omni 1.2 Flash is, or read how it compares with Seedance 2.5.

Product and Ad Variations

Keep the same product, packaging typography and brand colors while swapping backgrounds, lighting or aspect ratio for each placement.

Explainers and Multi-Shot Stories

Build a multi-shot sequence of up to 15 seconds from a single style frame, as Google does in its own demo. Google says camera moves such as orbits and zoom-outs now cause fewer unwanted jump cuts than in 1.1 Flash.

Talking Characters With Dialogue

Generate characters who speak, alongside music and sound effects in the same clip. Google says 1.2 Flash delivers more natural dialogue and clearer lip-sync, and keeps multiple speakers distinct.

Video Editing and Restyling

Edit existing footage of up to 15 seconds: replace a product or background, change the weather or restyle the whole clip, then render it at the resolution you need.

Gemini Omni 1.2 Flash on Kie.ai

01

Send Your First Request

Send a POST request to https://api.kie.ai/api/v1/jobs/createTask with model set to google/gemini-omni-flash-1-2 and an input object containing your prompt, duration set to 3, resolution set to 360p and aspect_ratio set to 16:9. The response returns a taskId; retrieve the video using Get Task Details or receive the result at your callBackUrl.
02

Gemini Omni 1.1 Flash Is Here Too

Gemini Omni 1.1 Flash is also available on Kie.ai with the same key, for clips of up to 10 seconds, so you can compare both versions on your own prompts.
03

One Key Across the Kie.ai Market

All models in the Kie.ai market use the same authentication method: an Authorization: Bearer YOUR_API_KEY header with the key from your Kie.ai API Key Management page.
04

Nothing to Host

Kie.ai provides its models as an API; there are no GPUs or model weights to manage.

Frequently Asked Questions

What is new in Gemini Omni 1.2 Flash compared with 1.1 Flash?

According to Google, 1.2 Flash extends generation and editing to 15 seconds (from 10), adds multi-turn conversational editing, follows references more closely, improves dialogue and lip-sync, and handles camera moves with fewer unwanted jump cuts. Google also says it costs less than 1.1 Flash.

How long can Gemini Omni 1.2 Flash videos be?

On Kie.ai, duration runs from 3 to 15 seconds, or 3 to 10 seconds when you set both a first and a last frame. Video editing keeps the length of the input clip, so you leave duration out.

What resolutions and aspect ratios does it support?

On Kie.ai, resolution is 360p, 720p (the default), 1080p or 4k, and aspect_ratio is 16:9 (the default), 9:16 or auto. Google recommends drafting at 360p or 720p and moving to 1080p or 4K for the chosen take.

Does Gemini Omni 1.2 Flash generate audio?

Yes. It generates synchronized speech, music and sound effects with the video, including dialogue with lip-sync for multiple speakers. Audio is not accepted as a general input.

What inputs can I send?

On Kie.ai you can send a prompt of up to 20,000 characters, up to 6 reference images in image_urls (each up to 20 MB), a first frame with an optional last frame, or one video of up to 15 seconds in video_list for editing.

How do I use the Gemini Omni 1.2 Flash API on Kie.ai?

Send a POST request to the createTask endpoint with the model google/gemini-omni-flash-1-2 and an input with your prompt, a duration and a resolution. Add image_urls for reference images or first_frame_url for image to video; to edit a clip, pass it in video_list and leave duration out.

How much does the Gemini Omni 1.2 Flash API cost on Kie.ai?

Gemini Omni 1.2 Flash is billed per second of output video by resolution, and video editing is billed on the length of the input clip. Current rates are in the pricing card on this page.

Are Gemini Omni 1.2 Flash videos watermarked?

Yes. Google adds an imperceptible SynthID watermark to every output and supports C2PA Content Credentials.

What are the model's known limitations?

Google says it is still improving how the model handles fast sports action, rapid scene changes and complex physics. Google also restricts editing of people's speech in videos for now.