prompts

CPM Analysis

The goal of this prompt is to identify all campaigns and keywords that have experienced a significant rise in CPM over a specified period. By surfacing changes with exact percentages, correlating them to other performance metrics, and diagnosing root causes using only validated account data, marketers can quickly address inefficiencies, manage auction pressure, and keep advertising costs under control.

Table of contents
Prompt

Prompt

Copy

Review all campaigns and keywords in Google Ads for any drastic increase in CPM (Cost Per Thousand Impressions) over the chosen time frame. For each case detected, display the CPM change percentage, impacted periods, and related performance metrics (impressions, clicks, conversions). Clearly explain possible drivers of CPM increases (e.g., auction pressure, targeting shifts, creative fatigue) with supporting data only. Disclose any data retrieval issues. End with concise recommendations to diagnose, monitor, or reduce CPM increases based on findings. Also, add auction insights and quality score reports within the existing report to make it more cohesive.

Output Received and How It Is Helpful

This Claud API-driven analysis rapidly highlights spikes in CPM, whether at campaign or keyword level, then connects these changes to actionable metrics and contextual causes.

Main Findings

  • Detected Campaign CPM Spike: "Product X Brand USA" — CPM increased X% between two time frames, while impressions decreased by X%, clicks dropped X%, and conversions fell X%. The cost per acquisition rose slightly, indicating reduced efficiency.

  • Keyword-Level Example: "[Brand A] [Platform X]" — CPM jumped X% on time frame, correlating with a X% drop in CTR and flat conversions. Impressions nearly held steady, showing that auction costs—not targeting or volume—were the driver.

  • Root Cause Analysis: Data shows auction pressure (competitor bids up nearly X% for core terms), creative fatigue (ad copy unchanged for X+ weeks noted in system alerts), and narrowing targeting (reduction in audience size by X% due to new geographic settings) are the three leading factors for CPM escalation.

  • Performance Impact: Higher CPMs resulted in lower click and conversion volumes, despite similar spend levels. Cost per lead increased in affected campaigns by X–Y%.

  • Data Issues: City-level CPM variations are unavailable for this reporting window. Some keyword-level CPM changes could not be matched to audience or device breakdowns due to API constraints. All surfaced CPM numbers fully validated from primary account data.

How This Is Helpful

  • This analysis lets marketers zero in on campaigns or keywords draining spend due to auction pressure or ad fatigue before major budget losses occur.

  • All findings are based on actual account data, increasing trust in both the diagnosis and the suggested optimizations.

  • Clear linkage of CPM spikes to related metrics (CTR, conversions, impressions) provides a complete understanding of efficiency impacts, not just cost changes.

  • Disclosure of missing data ensures actionable recommendations are both supported and honest about any reporting gaps.

Actionable Recommendations

  • Diagnose Immediately: Review competitor bids, analyze ad schedule and placement reports for impacted campaigns, and consider A/B testing new creatives in high-CPM groups.

  • Monitor Closely: Track CPM and CTR weekly for campaigns with previous spikes and set up custom alerts for future changes.

  • Reduce CPM Increases: Refresh ad copy, open targeting where possible, and refine bidding to avoid head-to-head competition in high-cost auctions. Increase negative keywords where auction density is highest.

Flag Data Issues: Request expanded device/geographic CPM breakdowns in the next API pull if high-impact areas remain opaque.

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