Use GPT-4o with Google Apps Script and Sheets to automate performance reviews across your accounts.

From Shopping feed cleanup to search term waste audits to performance reviews across entire accounts ChatGPT API can streamline some of these tasks. 

This article explains how to set up the API, use it safely, and apply it to effective PPC workflows.

Step 1 Unleash the Power: Access the ChatGPT API Now!

To use GPT in your scripts or applications, you need access to the OpenAI API. This is different from using ChatGPT in a browser, as the API allows you direct control through programming.

Here’s how to get started:

• Create a free OpenAI account: platform.openai.com/signup
• Generate an API key:
  • Go to API Keys.
  • Click Create new secret key.
  • Save the key somewhere secure. You won’t be able to view it again.

Your API key is private and sensitive. Anyone with access can use your account balance, so treat it like a password.

The Shocking Truth About Testing Costs: Are You Ready to Pay Up?

The ChatGPT API is pay-as-you-go. As of writing, GPT-4o (the fastest and most cost-effective model) costs:

• $0.005 per 1,000 input tokens.
• $0.015 per 1,000 output tokens.

1,000 tokens is roughly 750 words of input/output combined. Most simple prompts cost less than $0.01 per call.

For testing:

• Start by setting a $25–$75 prepaid credit. That’s enough to prototype, build, and even run light production scripts for a few weeks.
• Monitor usage under Billing > Usage.
• Set a usage limit at Billing > Limits to avoid surprises.

Step 2: Don’t Just Integrate – Conquer Your API Choices!

You can call the API from different environments depending on your comfort level and workflow:

If you’re working in Google Ads and pulling data into Sheets, Apps Script is an easy entry point.

Step 3: Unleash the Power of the ChatGPT API (Dare to Use Google Apps Script)

Here’s a basic implementation of calling GPT-4o from Google Sheets:

function callChatGPT(prompt) {

  const apiKey = 'sk-...'; // Your API key

  const url = 'https://api.openai.com/v1/chat/completions';

  const payload = {

    model: 'gpt-4o',

    messages: [

      { role: 'system', content: 'You are a Google Ads expert.' },

      { role: 'user', content: prompt }

    ],

    temperature: 0.3

  };

  const options = {

    method: 'post',

    contentType: 'application/json',

    headers: {

      Authorization: 'Bearer ' + apiKey

    },

    payload: JSON.stringify(payload)

  };

  const response = UrlFetchApp.fetch(url, options);

  const json = JSON.parse(response.getContentText());

  return json.choices[0].message.content;

}

Then in a cell:

=callChatGPT("Analyze Adidas top 50 non-converting search terms from Performance Max")

Step 4: Unleashing Ultimate Efficiency Secrets

To run things smoothly and save costs, follow these tips:

• Batch your inputs: Group 5-20 titles or search terms in one request.
• Use system prompts: Set the role clearly (“You are a Google Ads strategist for Adidas”).
• Lower temperature (0–0.3): Keeps outputs consistent and avoids hallucination.
• Control response length: Ask for specific output format or word count when needed.
• Test edge cases: Run messy inputs through manually to see how GPT responds.

How Google Ads Can Revolutionize Your Business Strategy

To demonstrate how this works in practice, I’ll walk through some real use cases using Adidas as an illustrative example. 

For clarity, I’m not affiliated with Adidas or Nike, and these examples are hypothetical. 

They’re used to show how these techniques apply to enterprise-level Google Ads accounts with large product catalogs and high-volume campaigns.

Use case 1: Shopping feed optimization
Tired of watching competitors steal your thunder? It’s time to take control of your shopping feed and unleash its full potential. Don’t settle for mediocre results when your products deserve the spotlight! Optimize every inch of your shopping feed, turning it from a mere afterthought into a powerhouse of conversions. Get ready to dominate the market—your competitors won’t know what hit them!

Adida’s product feed is massive – shoes, clothing, gear, accessories – all in dozens of variants. 

Product titles that aren’t well-structured can result in poor visibility or irrelevant impressions.

Using GPT-4o, you can rewrite product titles at scale using this structure:

Rewrite the product title to include gender, product type, main feature, and brand. Format as: [Gender] [Product Type] with [Feature] | Adidas.

• Before: “Adizero EVO SL Shoes”
• After: “Men’s Running Shoes with Responsive Cushioning | Adizero EVO SL Shoes”

We ran this workflow in Google Sheets using GPT via Apps Script. 

Output titles were more keyword-aligned, more descriptive, and performed better in Shopping ads – increasing CTR and improving match relevance.

Use case 2: Search term waste auditing in Performance Max is not just a tedious task—it’s an absolute necessity! How many valuable clicks are slipping through the cracks because of irrelevant search terms? It’s time to confront the chaos and demand accountability. By scrutinizing every wasted search term, you’re not only optimizing your campaign but also reclaiming your hard-earned budget from the clutches of inefficiency. Don’t settle for mediocrity; unleash the true potential of your Performance Max campaigns and transform waste into opportunity!

Adida’s Performance Max campaigns generate huge volumes of search term data – much of it irrelevant. 

Reviewing it manually is inefficient and inconsistent.

Our approach:

• Pull in top-spending terms with zero conversions.
• Use GPT to analyze and categorize waste themes.

Prompt example:

• “You are auditing Adida’s Performance Max search terms. Group the following into themes like competitor traffic, job searches, or unqualified queries. Return a summary and examples.”

GPT output:

• Competitor searches: “nike running shoes,” “under armour basketball gear.”
• Careers: “adidas warehouse job application,” “retail jobs at adidas.”
• DIY/informational: “how to clean adidas shoes,” “best running shoes for flat feet.”

We use this output to generate negative keyword ideas, refine targeting, and create weekly alerts if waste passes a threshold.

Use case 3: Google Ads audit automation for Adidas brand campaigns – Imagine a world where Adidas doesn’t just dominate the field but also utterly crushes its competition in digital advertising. With the power of Google Ads audit automation, Adidas can dissect and refine its brand campaigns to an explosive degree, leaving rivals gasping in the dust. This isn’t just about efficiency; it’s about forging a relentless, powerhouse strategy that transforms every click into gold. Why settle for mediocre when you can elevate your game to an astonishing new level?

We’ve built a tool that combines the Google Ads API with GPT-4o to run full account audits.

In Adidas case, we used GPT to interpret performance flags pulled from API queries like:

• High-spend keywords with Quality Score < 5.
• Campaigns losing impression share due to budget.
• Device-level CPA imbalances.
• Unused sitelinks or ad extensions.

Prompt example:

• “Adidas brand campaign has 14 keywords spending over $1,000/mo with a Quality Score of 3. Suggest hypotheses for low performance and what changes we should consider.”

GPT response:

• Ad copy likely missing branded modifiers (e.g., “Adidas outlet,” “Adidas store near me”).
• Landing page mismatch – queries may be location-based but page is product-focused.
• High mobile traffic + slow load time = poor landing page experience score.

This output is added directly to a Google Slides deck used for internal reviews and client QBRs.

Unleash the Power of ChatGPT API for Dominating Google Ads Automation!

ChatGPT isn’t just a writing assistant – it’s an automation engine that streamlines various writing tasks by leveraging advanced language processing capabilities. With its ability to generate coherent text swiftly, it enhances productivity for individuals and teams alike. Whether you’re brainstorming new ideas, drafting comprehensive articles, or fine-tuning existing content, ChatGPT adapts to your needs, making the writing process more efficient and enjoyable. Its versatility empowers users to focus on creativity and critical thinking, leaving tedious writing tasks to the automation engine.

The key is not to let GPT do your job.

The key is plugging GPT into the places where repetition slows you down: 

• Cleaning up feed data.
• Summarizing noisy reports.
• Generating hypotheses.
• Providing structured analysis at scale.

You don’t need to be a developer to use the API. Google Apps Script and Sheets are powerful enough to run real workflows today. With an intuitive interface and easy-to-follow documentation, users can create customized solutions without extensive coding knowledge. Whether you’re managing data, automating tasks, or integrating various services, these tools offer versatility that can significantly enhance productivity.

Once you see the time savings – and the quality of GPT-4o outputs when structured correctly – it’s hard to go back. The ability to streamline processes and generate insightful content effortlessly transforms the way teams approach their day-to-day operations. You’ll find yourself more focused on strategic initiatives rather than getting bogged down by repetitive tasks. By harnessing the capabilities of these tools, you position yourself and your team for greater efficiency and depth of analysis, which ultimately leads to improved project outcomes and enhanced creativity in your work.