In the Adstudio assistant
The assistant compares periods by campaign and decomposes cost per conversion; it reads day-of-week and monthly splits for TikTok.
TikTok Ads · CPA rising
Why is my TikTok Ads CPA going up?
TikTok Ads CPA goes up because CPM rose, click-through rate fell — often as a video wears out — or fewer clicks convert. Adstudio finds the campaigns whose cost per conversion rose and splits the rise into those three factors; over MCP it can go down to the ad to find the video behind it.
The numbers that matter
What to read first.
- Cost per conversion
- Per campaign, against its own goal.
- CPM
- TikTok auction prices move fast in busy seasons.
- CTR
- Falls quickly when a video has been seen too often.
The method
How to break it down.
- 01Compare cost per conversion with the previous equal period, by campaign.
- 02Split each campaign's rise into CPM, click-through rate and conversion rate.
- 03If CTR fell, find the ads with falling CTR and rising frequency.
How Adstudio answers it
In the app, or from the AI you already use.
From ChatGPT or Claude, over MCP
Over MCP, your AI reads CPM, CTR, frequency and conversions per ad group and ad for two periods.
- list_accounts
- query_performance
Prompts
Copy one and ask.
- “Which TikTok campaigns got more expensive per conversion this week, and why?”
- “Find the TikTok ads whose CTR fell while frequency rose in the last 14 days.”
Limits
What Adstudio will not tell you.
- Ad-level reading is available over MCP; the in-app assistant stops at campaign level for TikTok.
FAQ
Questions people also ask.
Yes. Alerts check TikTok Ads every hour and email you when your threshold is crossed.
No. Adstudio has no TikTok write path; you make the change in TikTok Ads Manager.
Creating an account costs nothing, but connecting an ad account needs a paid plan: Hobby at $19 a month, or Business at $39 per workspace a month. There is no trial, and the price does not depend on your ad spend.