TikTok and Instagram Reels look similar but the audiences and algorithms behave differently enough that what works on one does not always work on the other.
The audience difference
TikTok skews younger with stronger discovery culture. Users come to find new things so they tolerate unfamiliar brands more. Instagram Reels sits inside an app where users primarily see people they follow. Slightly older, higher purchase intent in fashion, beauty and home.
What changes between platforms
| Factor | TikTok | Instagram Reels |
|---|---|---|
| Hook style | More aggressive, pattern interrupt | Can be slightly softer |
| Video length | 15 to 45 seconds | 15 to 30 seconds |
| Cold audiences | Stronger discovery | Retargeting tends to be stronger |
The practical approach
- Produce once, adjust for each. Take your 45 second TikTok version and cut a 20 to 25 second version for Instagram.
- Test the same hook on both. A hook that fatigues on one may still be fresh on the other.
- Caption everything. A significant percentage of viewers watch with sound off on both platforms.
Every AI UGC ad we produce is formatted for Meta and TikTok ready to run. See pricing or read about platform rules for AI ads.