AI TikTok Caption Generator
5 caption variations under 150 characters — each with a different hook type and hashtags.
How it works
Describe your video
What's the video about? What niche are you in? What do you want viewers to do — comment, share, follow?
Get 5 caption variations
Curiosity gap, controversy, identity statement, direct value, and comment bait — one of each. All under 150 characters.
Add hashtags as first comment
Pro tip: post hashtags as the first comment to keep your caption clean while still getting algorithmic reach.
TikTok caption strategy: what the algorithm actually rewards
Captions don't go viral. Videos do. But the right caption tells the algorithm WHO to show your video to — and gets viewers to take action.
The 150-character hard limit
TikTok cuts captions at 150 characters. Anything after that is hidden behind 'more'. Your entire CTA must land in the first 150 characters — period.
First 3-4 words appear in the feed
Before viewers tap to read the full caption, they see 3-4 words. Those words are your secondary hook. Make them count — they either earn the tap or don't.
Keywords in captions affect discovery
TikTok search is growing fast. Include 1-2 specific keywords in your caption — not hashtags — so it appears in TikTok search results for that topic.
Comments are the most powerful engagement signal
Comment-bait captions ('Comment your answer below', 'What would you do?') drive comments, which the algorithm weights more heavily than likes for distribution.
Hashtags as first comment = more caption space
Move all hashtags to the first comment. This keeps your caption clean and readable while still getting the algorithmic benefit of relevant hashtags.
Frequently asked questions
Do TikTok captions affect video views?
Indirectly, yes. Captions help TikTok's algorithm understand what your video is about and who to show it to. They also drive comments, which is one of the strongest signals TikTok uses to decide whether to push a video to the For You Page.
How many hashtags should I use on TikTok?
3-5 targeted hashtags outperform 20+ generic ones. Mix one very broad hashtag (#fyp, #foryou), one mid-size niche hashtag, and 1-2 hyper-specific hashtags. Generic overuse reads as spam to the algorithm.
Should every TikTok caption have a CTA?
Not every post — but most should. The CTA should match your goal: follows ('Follow for more [topic] tips'), comments ('Drop your answer below'), or link clicks ('Link in bio for the full guide'). One CTA only — multiple asks reduce action on all of them.
Does posting time matter more than the caption?
Posting time has a small initial impact — it affects who sees the video in the first 30-60 minutes. But TikTok keeps re-testing content for days and weeks. A video with strong engagement at any point can go viral weeks after posting.
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