Best AI video generators for YouTube
The five AI video models on DubVoice.ai ranked for YouTube work — cost per clip, aspect ratio, audio and where each one actually earns its price.
Short answer
For horizontal long-form, Veo 3.1 Fast is the answer: 8 seconds with synchronised audio for 7,500 credits, and the audio alone saves a separate sound pass. For Shorts, Omni Flash — 9:16 native, and at 4,688 credits for four seconds you can afford the twenty attempts that a good Short actually takes. Use Meta AI video at 2,000 credits for rough cuts before committing, and Kling 3 only for the one shot in a video that has to look expensive.
YouTube work splits into two jobs: horizontal long-form, where 16:9 and audio matter, and Shorts, where 9:16 and volume matter. No single model wins both, which is the argument for having all five on one credit balance rather than five subscriptions.
The table below is every video model on DubVoice.ai with the numbers that decide the choice. Prices are what the platform actually charges.
Side by side
| Veo 3.1 | Kling 3 | Omni Flash | Grok Imagine (Video) | Meta AI Video | |
|---|---|---|---|---|---|
| Cheapest clip | 7,500 credits (Fast, 8s) | 75,000 credits (2.5, 5s) | 4,688 credits (4s) | 3,000 credits (6s, 480p) | 2,000 credits (flat)✓ |
| Clip length | 8s fixed | 5s | 4–10s, your choice✓ | 6s or 10s | Model-decided |
| Max resolution | 1080p | 1080p | 720p class | 720p | 720p |
| Vertical 9:16 for Shorts | No | Yes | Yes | Yes | Yes |
| Native audio | Yes✓ | No | No | No | No |
| Best for | Long-form hero shots | Motion-heavy vertical | Volume social | Odd aspect ratios | Rough cuts |
A green cell is the better value in that row. Every price is what DubVoice.ai charges — one credit balance covers all of these models.
Which one should you use?
Horizontal long-form. Audio included, 8-second clips, best cost-to-quality on the Fast tier.
Shorts at volume. Native vertical, pick your length, cheapest per second.
Rough cuts and idea tests before spending real credits.
10-second clips on a budget, or an aspect ratio nothing else covers.
The one hero shot per video where motion has to be flawless.
Frequently asked questions
What is the best AI video generator for YouTube Shorts?
Omni Flash on DubVoice.ai — it renders 9:16 natively, lets you pick a length between 4 and 10 seconds, and starts at 4,688 credits for a 4-second clip, which is cheap enough to try twenty variations.
Which AI video model includes sound?
Veo 3.1 is the only one that generates synchronised audio — dialogue, ambience and effects — as part of the render. Every other model returns silent video, which you can score with AI music or narrate with any of the 17,800+ voices on the same balance.
How much does it cost to make a YouTube video with AI?
A one-minute video built from eight Veo 3.1 Fast clips costs 60,000 credits, about $0.44 at the 3M package rate. Add a narration track at 1 credit per character and a music bed at 5,000 credits and the whole thing lands under a dollar.
Do I need separate subscriptions for each model?
No. All five video models, plus text-to-speech, images, music, dubbing and translation, run on one DubVoice.ai credit balance. There is no subscription and credits never expire.
About DubVoice.ai
DubVoice.ai is an all-in-one AI creation platform for voice, video, images, music, dubbing and translation.