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veo / extend
Commercial usePart of the Google API family — compare all Google models →

Google DeepMind’s upgraded AI video model for realistic motion generation, extended clip duration, multi-image reference control, and synchronized audio output in native 1080p.

Model Type:
Pricing: Lite mode 30 credits ($0.15 ) , Fast mode 60 credits ($0.30), Quality mode 250 credits ($1.25) per extension. High-tier top-ups include 10% bonus credits, making the effective cost approximately 90% of the listed prices.
Input

The taskId must be a valid taskId returned from the video generation interface. Note: Video generated after 1080P cannot be extended.

Describe the text prompt for extending the video content.

If provided, the watermark will be added to the generated video.

Output
video placeholder

Enter a task ID to get the video version of your video.

README

Complete guide to using Veo 3.1

Google Veo 3.1 API

Create high-quality videos from text or images with Google Veo 3.1 API on Kie AI. Control every frame, extend scenes, and generate synchronized audio — try Veo 3.1 today and experience cinematic AI video generation.

Available Models of Veo 3.1 API on Kie AI

Veo 3.1 Fast

Veo 3.1 Fast focuses on speed and lower cost. It’s ideal for fast video generation, social media content, and ad creatives where quick turnaround matters. Use it on Kie AI to test ideas and iterate rapidly.

Veo 3.1 Quality

Veo 3.1 Quality delivers richer detail, smoother motion, and accurate lighting. It’s suited for projects that demand cinematic precision, professional visuals, and consistent high-quality output on Kie AI.

New Capabilities of Google Veo 3.1 API

Start & End Frame Control in Veo 3.1 API

You can define exactly how your AI video begins and ends. On Kie AI, the Veo 3.1 API lets you control both the first and last frame, creating smooth, cinematic transitions. This gives your clips a clear rhythm and helps every sequence feel intentional and complete.

Multi-Image Reference with Veo AI 3.1

Use multiple images to guide your video’s visual direction. With the Veo 3.1 API on Kie AI, you can provide different reference images to shape your character design, lighting style, or color tone, ensuring your generated video stays visually consistent across every shot.

Native Audio and Richer Sound in Veo 3.1 API

Veo 3.1 adds native audio to your creations — including dialogue, ambient sound, and effects that match every movement. When you generate videos through Kie AI’s Veo 3.1 API, sound and visuals stay perfectly aligned, making scenes feel more immersive and believable.

Extend Your Clips Beyond 8 Seconds with Gemini Veo 3.1

If you want your clip to continue naturally, you can extend it without losing coherence. The “Extend” feature in Veo 3.1 API allows you to go beyond 8 seconds, carrying forward both motion and narrative to create longer, more dynamic video sequences.

Consistent Characters Across Scenes in Veo 3.1 AI Video Generator

Upload reference images of your character, and Kie AI’s Veo 3.1 API will maintain the subject’s identity, appearance, and motion across every frame. This ensures your character stays visually consistent throughout multiple scenes, creating a cohesive and professional-looking video narrative.

Veo 3.1 vs Veo 3 vs Sora 2

Veo 3

Veo 3 is Google’s first large-scale text-to-video model with cinematic motion and native audio. It supports 16:9 and 9:16 formats, 720p–1080p resolution, and generates short clips up to 8 seconds, optimized for reliable, production-ready video generation.

Veo 3.1

Veo 3.1 expands creative control with Start & End Frame, Multi-Image Reference, and Extend. It generates longer, smoother clips with stronger prompt adherence, richer native audio, and consistent visual style—ideal for storytelling and cinematic workflows.

Sora 2

Sora 2 by OpenAI focuses on short-form video creation with realistic motion, synchronized dialogue, and accurate physics simulation. It emphasizes natural scenes, expressive animation, and controllable narrative flow for creative and experimental projects.

How to Try Google Veo 3.1 API on Kie AI

Step 1: Create Your Video Prompt with Veo 3.1 API

Start by writing a text prompt or uploading multiple reference images. The Veo 3.1 API on Kie AI interprets your input to design realistic motion, lighting, and scene composition. You can describe the action, tone, or setting to shape how your video unfolds.

Step 2: Customize Video and Audio Settings in Kie AI

Choose your preferred settings such as resolution (720p or 1080p) and enable native audio generation. With Kie AI’s Veo 3.1 API, you control how the video sounds and looks—deciding on length, transitions, and ambient sound for a complete cinematic effect.

Step 3: Generate and Download with Veo 3.1 AI Video Generator

Click Generate to start rendering your clip. Kie AI instantly previews the result so you can review motion, sound, and detail. Once satisfied, download your video or use the Veo 3.1 API endpoint directly for integration into your app or production workflow.

Why Use Kie AI for Veo 3.1 API Access

Free Veo 3.1 API Online Testing on Kie AI

Generate your first AI video using Veo 3.1 API for free on Kie AI. No installation or setup is needed — simply open the playground, enter your text or image prompt, and see instant results directly in your browser.

Affordable Google Veo 3.1 API Pricing

Kie AI provides access to Google Veo 3.1 API at a more affordable rate. You can create high-quality videos with native audio while saving on costs, making it the best choice for developers, creators, and startups building AI video tools.

All AI Video and Image APIs in One Platform

Kie AI unifies top AI APIs — including Veo 3.1, Veo 3, Sora 2, and Wan 2.2 — in a single interface. You can explore, compare, and integrate different models without switching platforms, simplifying your entire creative workflow.

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