AI Video Resolution and Duration: What Each Model Actually Supports

AI video resolution and clip length, referenced across all 22 models — the two specs that decide whether a model can do your job at all. Video resolution and duration limits eliminate candidates faster than any quality argument.

Updated September 3, 2026

AI Video Resolution and Duration: What Each Model Actually Supports: what this guide covers

Resolution ceilings
Duration ceilings
How to get longer videos anyway
Frame rate is the forgotten spec

Resolution ceilings

AI video resolution tops out at 1080P for most flagships: Veo 3.1, Veo 3.1 Fast, Wan 3.0, Wan 3.0 Prime, Hailuo 2.3, Hailuo 2.3 Fast, HappyHorse 1.0, HappyHorse 1.1, Seedance 2.0, Seedance 2.0 Fast, Seedance 2.5, PixVerse v6, PixVerse v5.6, Vidu Q3 Pro, Vidu Q3 Turbo, RunwayML Gen-4.5, Aleph 2, P-Video and LTX-2.5 Fast. FLUX 3 Video is the only model in the catalog that reaches FHD. Seedance 2.0 Mini is limited to 720P video resolution, which is fine for social but not for anything projected on a large screen.

Duration ceilings

Clip duration runs from 4 to 30 seconds across the catalog. Eight seconds: Veo 3.1 and Veo 3.1 Fast. Ten seconds: Hailuo 2.3, Hailuo 2.3 Fast and PixVerse v5.6. Twelve seconds: Seedance 2.0, Seedance 2.0 Fast and Seedance 2.0 Mini. Fifteen seconds: Wan 3.0, Wan 3.0 Prime, HappyHorse 1.0, HappyHorse 1.1, PixVerse v6 and Grok Imagine Video. Sixteen seconds: Vidu Q3 Pro and Q3 Turbo. Twenty seconds: FLUX 3 Video, P-Video, LTX-2.5 Fast and Seedance 2.5. Thirty seconds: Aleph 2, working with existing footage rather than generating from scratch.

How to get longer videos anyway

When resolution and duration ceilings both bite, there are three routes. Extend: Seedance 2.0, Seedance 2.0 Fast, Seedance 2.5 and Grok Imagine Video all support video extension. Continue: FLUX 3 Video supports video-to-video, which chains clips while holding style. Or cut: generate several clips on the same prompt skeleton and edit them together — which is what most professional output does anyway.

Frame rate is the forgotten spec

P-Video is the only model in the catalog that exposes frame rate explicitly, at 24 or 48 fps, and LTX-2.5 Fast also allows configuring it. Everything else runs at a fixed rate. If you are intercutting generated footage with real camera footage at 24 or 25 fps, this matters more than resolution.

Models mentioned in this guide

Veo 3.1

Google · 85 credits · 8s max

FLUX 3 Video

Black Forest Labs · 75 credits · 20s max

P-Video

Pruna AI · 70 credits · 20s max

LTX-2.5 Fast

Lightricks · 18 credits · 20s max

Aleph 2

RunwayML · 110 credits · 30s max

Wan 3.0 Prime

Alibaba · 60 credits · 15s max

AI Video Resolution and Duration: What Each Model Actually Supports FAQ

Can any model generate 4K video?

No model in the current catalog outputs 4K natively. FLUX 3 Video reaches FHD, which is the highest ceiling available.

Which model generates the longest clip from scratch?

FLUX 3 Video, P-Video and LTX-2.5 Fast all generate up to 20 seconds from a prompt or references. Aleph 2 handles 30 seconds, but it edits existing footage rather than generating it.

Does higher resolution cost more credits?

No — credits are charged per generation in our catalog, not per resolution tier. That makes running the flagship at its best quality the same price as running it low.

More guides

How to Choose an AI Video Model How to Write Prompts for AI Video Models Text-to-Video vs Image-to-Video: Which Should You Use?AI Video Models With Native Audio: The Complete List How to Compare AI Video Models Properly