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Best prompts for TikTok ad copy using engagement metrics
12 copy-ready prompts to generate TikTok ad copy optimized by engagement metrics (watch time, completion rate, CTR, shares, comments, conversions). Each entry includes a clear instruction, short explanation, a realistic example input + sample output, and recommended AI models.
Claude Opus 4
GPT-5
Claude Sonnet 4
Gemini 2.5 Flash
Gemini 2.5 Pro
You've stared at that blank TikTok ad campaign for the third time today, knowing your creative needs to hit different metrics but having no clue how to optimize copy for watch time versus CTR. The frustration hits when you realize you're guessing at what hooks will actually drive engagement, burning budget on ads that look good but don't convert. Sound familiar?
These 12 battle-tested prompts transform how you create TikTok ad copy by connecting specific engagement metrics to proven copy strategies. You'll get ready-to-use prompts for everything from 6-second completion-rate scripts to retargeting copy for high-engaged non-converters, plus A/B test variations and localized content that actually moves the needle. Instead of throwing spaghetti at the wall and hoping something sticks, you'll have a systematic approach to generate copy that targets your exact KPI goals and delivers measurable results.
1
Hooks Optimized for High Watch Time
Given the metric: average watch time 65% and completion rate 58%, produce 6 distinct 3–5 word opening hooks for a 15s TikTok ad that preserve curiosity, drive completion, and fit on-screen text. For each hook, include one brief reason why it will keep viewers watching and a suggested on-screen text style (e.g., bold white, 24pt, top-left).
Generate multiple opening hooks tuned to an audience with strong watch time; prioritize curiosity and fast value delivery.
2
Captions to Lift CTR with Low Watch Time
Metrics: CTR 0.9%, average watch time 30%. Produce 8 caption variants (max 80 characters) in two A/B groups to test: four aiming for higher CTR (strong curiosity/offer) and four to improve watch time (intrigue + promise). Label each with expected impact and one suggested CTA button text.
Create short captions designed to increase clicks when watch time is low; include A/B caption pairs for testing.
3
Scripts for 6s, 15s, 30s Ads Based on Completion Rate
Given completion rate baseline 45% and target 60%, write three concise scripts: 6s, 15s, and 30s. Each script should include (1) opening hook (0–2s), (2) one key benefit, (3) a social proof line, and (4) exact CTA. Indicate where to add captions and suggested background music energy (low/medium/high).
Provide full voiceover scripts tailored to different ad lengths using completion-rate targets.
4
CTA Variations Optimized by Conversion & CTR
Given CTR 1.2% and conversion rate 2.5%, produce 10 CTA variations grouped into: immediate purchase (5), content engagement (3), and email/signup (2). For each CTA provide expected micro-conversion uplift rationale and a recommended button label (max 2 words).
Deliver focused CTAs tailored to measured CTR and conversion priorities.
5
Comment Prompts to Boost Shares and Comments
Given current shares/day 45 and comments/day 120, write 12 comment-prompt overlays and pinned-comment suggestions to appear on the ad (tone: playful). For each include one moderator-friendly variant and an expected behavior (↑comments or ↑shares).
Craft comment hooks and prompts that encourage viewer interaction and sharing to leverage algorithmic boosts.
6
A/B Test-Ready Ad Copy Sets with KPI Targets
Given baseline metrics: CTR 1.0%, completion 50%, conversions 1.8%, create Variant A (performance-leaning) and Variant B (engagement-leaning). For each variant supply: headline (max 6 words), 15s script, primary caption, CTA, and KPI targets (CTR, completion, conv) with realistic % lift goals.
Produce two complete ad copy variations with explicit KPI targets for quick A/B testing.
7
Headlines Focused on Rewatch/Loopability
Metric: rewatch rate 12% (goal 20%). Generate 10 headline variations (2–4 words) and 5 micro-direction notes for creatives (camera cuts, reveal timing) that are proven to boost loopability. For each direction, state which second range to place the reveal.
Create short text hooks and visual directions that encourage users to rewatch the ad, improving loop and completion rates.
Stop Losing Your AI Work
Tired of rewriting the same prompts, juggling ChatGPT and Claude in multiple tabs, and watching your best AI conversations disappear forever?
AI Flow Chat lets you save winning prompts to a reusable library, test all models in one workspace, and convert great chats into automated workflows that scale.
“AI Flow Chat powers our entire content strategy. We double down on what’s working, extract viral elements, and create stuff fast.”
Reference Anything
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DOCX
TikTok
Web
Reels
Video Files
Twitter Videos
Facebook/Meta Ads
Tweets
Audio Files
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