# Seedance 2.5 vs Kling 4 — 30s Video, References, Audio > Seedance 2.5 vs Kling 4.0: 4–30s vs 3–30s, 30 vs 10 references, optional vs always-on audio, 480p–1080p vs 720p/1080p. Compare specs and try both online. Canonical page: https://clipstudio.ai/ai-video-models/seedance-2-5-vs-kling-4 ## Intent Both run up to 30 seconds at up to 1080p with first/last frames. Seedance 2.5 takes up to 30 references and optional audio; Kling 4.0 takes up to 10 and always generates audio. ## Verdict Seedance 2.5 lists 4–30 seconds at 480p, 720p, or 1080p in 21:9, 16:9, 4:3, 1:1, 3:4, or 9:16, with optional audio, first/last frames, and up to 30 reference images. 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. Choose Seedance 2.5 for a large reference set, 480p drafts, or a silent take; choose Kling 4.0 for the Kling look with sound on every clip. Clip Studio does not publish a quality ranking between them. ## Spec table | Spec | Seedance 2.5 | Kling 4.0 | | --- | --- | --- | | Duration | 4–30 seconds | 3–30 seconds | | Resolution | 480p, 720p, 1080p | 720p, 1080p | | Aspect ratios | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 | 21:9, 16:9, 1:1, 9:16 | | Audio | Optional generated audio | Native audio | | Modes | Text prompt, Animate image, First → last, References | Text prompt, Animate image, First → last, References | | References | Up to 30 | Up to 10 | | Advanced controls | None listed | None listed | ## FAQs ### How many reference images does each support? Seedance 2.5 supports up to 30 in Clip Studio Video Lab. Kling 4.0 supports up to 10. ### Do both reach 30 seconds? Yes. Seedance 2.5 lists 4–30 seconds and Kling 4.0 lists 3–30 seconds. ### Do both generate audio? Yes. Audio is optional on Seedance 2.5 and always on for Kling 4.0. ### Which resolutions does each offer? Seedance 2.5 lists 480p, 720p, and 1080p. Kling 4.0 lists 720p and 1080p. ### How are Seedance 2.5 and Kling 4.0 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 (Seedance 2.5: 5 seconds at 720p with audio; Kling 4.0: 5 seconds at 1080p with audio), Clip Pro’s monthly allowance covers about 2 Seedance 2.5 clips or about 5 Kling 4.0 clips. Plan details live on the pricing page. ## Related - [Seedance 2.5](https://clipstudio.ai/ai-video-models/seedance-2-5.md) - [Kling 4.0](https://clipstudio.ai/ai-video-models/kling-4.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) - [Wan 3.0 vs Seedance 2.5](https://clipstudio.ai/ai-video-models/wan-3-0-vs-seedance-2-5.md) - [Seedance 2.5 vs Kling 3 Turbo Pro](https://clipstudio.ai/ai-video-models/seedance-2-5-vs-kling-3-turbo-pro.md) - [Veo 3.1 vs Seedance 2.5](https://clipstudio.ai/ai-video-models/veo-3-1-vs-seedance-2-5.md)