Which Google Ads ad groups have the worst cost per conversion?
There's no single built-in tool for ad-group-level cost per conversion, so this one runs as a custom GAQL query: select ad_group.name, campaign.name, metrics.cost_micros, and metrics.conversions from the ad_group resource, then divide cost by conversions per row. Caybl.ai's run_gaql_report tool handles arbitrary read-only GAQL like this directly.
The report
| GAQL field | What it means |
|---|---|
ad_group.name | The ad group's name. |
campaign.name | The parent campaign's name. |
metrics.cost_micros | Cost in micros - divide by 1,000,000 for the real amount. |
metrics.conversions | The number of conversions attributed to that ad group. |
Resource: ad_group. Tool: run_gaql_report - there's no single built-in tool for this, so Caybl.ai runs it as a custom, read-only GAQL query.
Ask it in plain English
Ask that in Claude or ChatGPT once Google Ads is connected through Caybl.ai, and your agent builds this exact report - you don't need to know the GAQL field names above at all.
What actually trips people up
This ranking is only as fair as your attribution model and conversion window. An ad group that mostly drives upper-funnel, assisted clicks can look expensive by last-click cost-per-conversion even when it's contributing real value further down the path - data-driven attribution can shift credit for the same conversion to a completely different ad group than the one that gets blamed here. Cross-check a surprising result against the account's attribution settings before cutting the ad group's budget.
Ask your own Google Ads account this
Connect once, then ask in plain English. No tokens, no setup.
Get started freeFAQ
Which GAQL fields does "Which Google Ads ad groups have the worst cost per conversion?" need?
ad_group.name, campaign.name, metrics.cost_micros, metrics.conversions, from the ad_group resource. These are the real Google Ads Query Language (GAQL) field names, so the same report can be built in the Google Ads UI, the API, or through Caybl.ai.
Can I just ask "Which ad groups have the worst cost per conversion this month?" instead of writing GAQL?
Yes. Once Google Ads is connected through Caybl.ai, ask "Which ad groups have the worst cost per conversion this month?" and your agent runs the report for you - no need to know the ad_group.name field or write GAQL yourself.
Does asking about ad_group change anything in my Google Ads account?
No. This is a read-only report - it uses Caybl.ai's read access to Google Ads and doesn't touch campaigns, budgets, or keywords. Making changes to your account is a separate, opt-in permission you control per connection.
Related recipes
Sources
- Google Ads Query Language (GAQL) reference - official Google documentation