Google Ads · Meta Ads · Compare platforms

How do I compare Meta Ads and Google Ads performance?

Compare Meta Ads and Google Ads on spend, cost per result and how each is trending, over the same dates and in the same currency — not on a combined conversion total, because each platform counts conversions with its own attribution. Adstudio reads both accounts for the same window, puts them side by side, and states each platform's attribution and conversion definition next to its number.

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The numbers that matter

What to read first.

Spend: The one figure that adds up across platforms, in one currency.
Cost per conversion, per platform: Comparable as a trend, not as a ranking of truth.
ROAS, per platform: Google counts by conversion action, Meta by attribution window; both are named.
Change against the previous period: Which platform is improving, which is slipping.

The method

How to compare, step by step.

01Fix one window and one currency for both.
02Read spend, conversions and value per platform, each with its own definition.
03Compare trends and cost efficiency, not summed conversions.
04Go into the platform that moved to find the campaign behind it.

How Adstudio answers it

In the app, or from the AI you already use.

In the Adstudio assistant

The assistant runs a cross-platform comparison behind a comparability check: it refuses to add conversions across platforms or money across currencies, and says what each number counts. Dashboards show Google and Meta side by side.

From ChatGPT or Claude, over MCP

From ChatGPT or Claude, your AI reads the Google Ads account and the Meta ad account separately with query_performance; each answer carries its own currency, period and source, so the comparison stays honest.

list_accounts
query_performance

Prompts

Copy one and ask.

“Compare Google Ads and Meta Ads for last month: spend, cost per conversion and change against the month before.”
“Which platform's cost per purchase improved more this quarter, Google or Meta?”

Limits

What Adstudio will not tell you.

Adstudio does not de-duplicate a buyer who clicked both a Google and a Meta ad; it never presents the sum as total sales.

FAQ

Questions people also ask.

Each platform claims conversions under its own attribution, so the same purchase can be counted twice. Adstudio keeps them apart.

Yes, side by side in each currency. Adstudio does not add them into one total.

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