Shorts Generator for Instagram Reels 2026
Compare Seedance 2.0, Kling 3.0 and Veo 3.1 inside Flixly's Shorts Generator for Instagram Reels. Get credit costs, durations and export specs for 2026 workflows.
TL;DR
Flixly's Shorts Generator with Seedance 2.0 handles 15- to 45-second Reels at 1080x1920 for 12 credits. Pair with Lip Sync Video for dialogue and Auto Captions for text. Veo 3.1 offers a cheaper 30-second option when scripts stay short.
The real question behind Reels creation
Users search for a shorts generator because they need consistent 15- to 30-second vertical videos that hold attention in the first three seconds. The answer starts with Flixly's Shorts Generator paired with Seedance 2.0 or Kling 3.0.
Direct answer with model specs
Seedance 2.0 produces 1080x1920 clips at 24 fps in under 45 seconds per generation. Kling 3.0 adds native motion blur for walking shots. Both run inside the same dashboard flow after credit purchase.
Model comparison table
| Model | Max duration | Resolution | Lip sync support | Average credits |
|---|---|---|---|---|
| Seedance 2.0 | 45 s | 1080x1920 | Yes | 12 |
| Kling 3.0 | 60 s | 1080x1920 | No | 15 |
| Veo 3.1 | 30 s | 1080x1920 | Yes | 10 |
| Sora 2 | 20 s | 720x1280 | No | 8 |
Layers most comparison posts skip
Start with a 9:16 storyboard at 1080x1920. Feed the first frame into Image to Video using Wan 2.7 for background consistency. Then switch to Lip Sync Video if dialogue appears. This two-step path avoids the single-model limitation where Seedance 2.0 drops text legibility below 24 fps.
Auto Captions runs after export and burns in 2-second segments. The tool supports .srt import for precise timing offsets like 00:00:03.500.
Tradeoffs nobody lists
Veo 3.1 costs fewer credits but caps at 30 seconds, forcing users to split longer scripts. Kling 3.0 refuses voice cloning, so pair it with Voice Cloning on a separate track. Sora 2 outputs lower resolution, requiring an upscaling pass through AI Image Tools.
Decision rule
Choose the model by script length first. Anything under 30 seconds defaults to Veo 3.1 inside the Shorts Generator. Scripts with spoken lines route to Seedance 2.0 plus lip sync.
FAQ
How many credits does a 15-second Reel cost with Seedance 2.0?
Seedance 2.0 charges 12 credits for a 15-second 1080x1920 clip. Add 4 credits if Auto Captions runs afterward.
Can I use Gemini 3.1 Flash TTS for voiceover in Reels?
Yes. Export the TTS file from Text to Speech and import it into the Shorts Generator timeline before rendering.
Does the Shorts Generator support 9:16 export only?
The tool defaults to 1080x1920 but allows 720x1280 for lower credit cost when testing concepts.
What happens if lip sync drifts on a 45-second clip?
Kling 3.0 rejects clips over 40 seconds with sync enabled. Switch to Seedance 2.0 and split the script at the 30-second mark.
How do I maintain character consistency across multiple Reels?
Upload the same reference image to Reference to Video before each new short.
Frequently Asked Questions
How many credits does a 15-second Reel cost with Seedance 2.0?▾
Seedance 2.0 charges 12 credits for a 15-second 1080x1920 clip. Add 4 credits if Auto Captions runs afterward.
Can I use Gemini 3.1 Flash TTS for voiceover in Reels?▾
Yes. Export the TTS file from Text to Speech and import it into the Shorts Generator timeline before rendering.
Does the Shorts Generator support 9:16 export only?▾
The tool defaults to 1080x1920 but allows 720x1280 for lower credit cost when testing concepts.
What happens if lip sync drifts on a 45-second clip?▾
Kling 3.0 rejects clips over 40 seconds with sync enabled. Switch to Seedance 2.0 and split the script at the 30-second mark.
