# FLUX 3 Max vs Veo 3.1 — AI Video Specs Compared > FLUX 3 Max video vs Veo 3.1: 5–20s at 720p/1080p in 7 aspect ratios vs 4–8s up to 4K with 3 references. Both offer optional audio. Try both online. Canonical page: https://clipstudio.ai/ai-video-models/flux-3-max-vs-veo-3-1 ## Intent FLUX 3 Max runs 5–20 seconds at 720p or 1080p in seven aspect ratios, from text, a still, or first/last frames. Veo 3.1 runs 4, 6, or 8 seconds up to 4K and adds up to three references. ## Verdict FLUX 3 Max lists 5–20 seconds at 720p or 1080p in 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, or 9:16, with optional audio, text, animate image, first/last frames, and seed. It has no reference-image mode. Veo 3.1 lists 4, 6, or 8 seconds at 720p, 1080p, or 4K in 16:9 or 9:16, with optional audio, first/last frames, up to three references, negative prompt, and seed. Choose FLUX 3 Max for longer shots or unusual frames such as 2:1 and 4:3; choose Veo 3.1 for 4K or a reference pack. Clip Studio does not publish a quality ranking between them. ## Spec table | Spec | FLUX 3 Max | Veo 3.1 | | --- | --- | --- | | Duration | 5–20 seconds | 4, 6, or 8 seconds | | Resolution | 720p, 1080p | 720p, 1080p, 4K | | Aspect ratios | 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16 | 16:9, 9:16 | | Audio | Optional generated audio | Optional generated audio | | Modes | Text prompt, Animate image, First → last | Text prompt, Animate image, First → last, References | | References | Not available | Up to 3 | | Advanced controls | Seed | Negative prompt, Seed | ## FAQs ### Which is longer, FLUX 3 Max or Veo 3.1? FLUX 3 Max lists 5–20 seconds. Veo 3.1 lists 4, 6, or 8 seconds. ### Does FLUX 3 Max take reference images? No. FLUX 3 Max works from text, one start image, or first and last frames. Veo 3.1 takes up to three references. ### Do both generate audio? Yes. Audio is optional on both, so either can make a silent clip. ### Does FLUX 3 Max output 4K? No. FLUX 3 Max lists 720p or 1080p. Veo 3.1 lists 720p, 1080p, or 4K. ### How are FLUX 3 Max and Veo 3.1 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 (FLUX 3 Max: 5 seconds at 720p with audio; Veo 3.1: 6 seconds at 1080p with audio), Clip Pro’s monthly allowance covers about 7 FLUX 3 Max clips or about 2 Veo 3.1 clips. Plan details live on the pricing page. ## Related - [FLUX 3 Max](https://clipstudio.ai/ai-video-models/flux-3-max.md) - [Veo 3.1](https://clipstudio.ai/ai-video-models/veo-3-1.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) - [FLUX 3 vs PixVerse V6](https://clipstudio.ai/ai-video-models/flux-3-vs-pixverse-v6.md) - [Veo 3.1 vs Seedance 2.5](https://clipstudio.ai/ai-video-models/veo-3-1-vs-seedance-2-5.md) - [Veo 3.1 Lite vs Veo 3.1 Fast](https://clipstudio.ai/ai-video-models/veo-3-1-lite-vs-veo-3-1-fast.md)