# Kling 4 vs Kling O3 — What Changed, Specs Compared > Kling 4.0 vs Kling O3: 3–30s vs 3–15s, 10 vs 4 references, always-on vs optional audio, and O3’s multi-shot. Catalog specs side by side. Try both online. Canonical page: https://clipstudio.ai/ai-video-models/kling-4-vs-kling-o3 ## Intent Kling 4.0 runs 3–30 seconds at 720p or 1080p with audio on every clip and up to 10 references. Kling O3 runs 3–15 seconds at 1080p with optional audio, up to four references, and intelligent multi-shot. ## Verdict Kling 4.0 lists 3–30 seconds at 720p or 1080p in 21:9, 16:9, 1:1, or 9:16, with audio on every clip, first/last frames, and up to 10 references. Kling O3 (Standard) lists 3–15 seconds at 1080p in 16:9, 9:16, or 1:1, with optional audio, first/last frames, up to four references, and intelligent multi-shot. Choose Kling 4.0 for shots longer than 15 seconds, 21:9, or a bigger reference pack; choose Kling O3 for multi-shot social clips or a silent take. Clip Studio does not publish a quality ranking between them. ## Spec table | Spec | Kling 4.0 | Kling O3 | | --- | --- | --- | | Duration | 3–30 seconds | 3–15 seconds | | Resolution | 720p, 1080p | 1080p | | Aspect ratios | 21:9, 16:9, 1:1, 9:16 | 16:9, 9:16, 1:1 | | Audio | Native audio | Optional generated audio | | Modes | Text prompt, Animate image, First → last, References | Text prompt, Animate image, First → last, References | | References | Up to 10 | Up to 4 | | Advanced controls | None listed | Multi-shot | ## FAQs ### What changed from Kling O3 to Kling 4? In Video Lab, Kling 4.0 doubles the longest shot to 30 seconds, adds 720p and 21:9, and takes up to 10 references instead of four. It generates audio on every clip and has no multi-shot toggle. ### Does Kling 4 have multi-shot like Kling O3? No. Intelligent multi-shot is a Kling O3 control. Kling 4.0 generates one continuous clip. ### Can I make silent clips? On Kling O3, yes: audio is optional. Kling 4.0 generates audio with every clip. ### Do both support first and last frames? Yes. Both support a start image, first and last frames, and reference images. ### How are Kling 4.0 and Kling O3 priced? Neither is free. Both are included in every Clip Studio plan and use the plan’s monthly generation allowance, and each setup is quoted before you generate. At each model’s default setup (Kling 4.0: 5 seconds at 1080p with audio; Kling O3: 5 seconds at 1080p), Clip Pro’s monthly allowance covers about 5 Kling 4.0 clips or about 15 Kling O3 clips. Plan details live on the pricing page. ## Related - [Kling 4.0](https://clipstudio.ai/ai-video-models/kling-4.md) - [Kling O3](https://clipstudio.ai/ai-video-models/kling-o3.md) - [Video Lab](https://clipstudio.ai/video-lab.md) - [All models](https://clipstudio.ai/ai-video-models.md) - [Kling 4.0 vs Veo 3.1](https://clipstudio.ai/ai-video-models/kling-4-vs-veo-3-1.md) - [Kling O3 4K vs Kling O3 Pro](https://clipstudio.ai/ai-video-models/kling-o3-4k-vs-kling-o3-pro.md) - [Kling 3 4K vs Kling 3 Pro](https://clipstudio.ai/ai-video-models/kling-3-4k-vs-kling-3-pro.md) - [Luma Ray 3.2 vs Kling 4.0](https://clipstudio.ai/ai-video-models/luma-ray-3-2-vs-kling-4.md)