Build Your First AI Workflow with Google Sheets and OpenAI

You are about to build a smart idea tracker, a Google Sheet that uses AI to brainstorm and organize your ideas directly inside the cells.

Before we go into the steps, it helps to understand how this fits into the bigger picture of using AI for everyday workflows. Google Sheets becomes more than just a spreadsheet. It turns into your creative command center, where ideas start as simple notes and evolve into structured, AI-generated content.

How to Connect Google Sheets to OpenAI (Step-by-Step Tutorial)

Once you’ve mastered this setup, you can scale it using the strategies in AI Workflow Automation: The Complete Guide to Smarter Productivity, or fine-tune your results with How to Build Custom AI Prompts for Reusable Templates.

Instead of jumping between ChatGPT and your notes app, this setup lets you:

• Write an idea once (title + short description).
• Watch AI instantly generate summaries, hashtags, or title ideas right in your sheet.
• Keep all your creative thoughts structured in one place, so they are sortable, searchable, and ready for reuse later.

It’s simple enough for anyone to follow and powerful enough to become your first working AI workflow — no coding or external tools required.

By the end, you will have a live sheet that turns your rough ideas into polished, categorized content suggestions with one formula.

Here we go with the steps to get you started:

Step 0 – Before You Begin

Before we start, let’s make sure you’re set up. This workflow only takes about 15 minutes, but it helps to have everything ready first.

You will need:

• A Google account (signed in to Google Sheets).
• An OpenAI account (to create your API key).
• A stable internet connection.

Tip: Keep both Google Sheets and OpenAI open in the same browser window. That way, you can switch between them easily and avoid any permission pop-ups.

Optional but helpful: open a blank tab for platform.openai.com/account/api-keys so you’re ready when we reach the API key step.

Note: You will need an OpenAI account with a valid payment method added for your API key to work.

Step 1 — Create Your Sheet

1. Open Google Sheets → click + Blank → rename it AI Idea Tracker.
2. In the first row, add three headers:

In Row 1, type:

• A: Title
• B: Description
• C: AI Summary

Your sheet should now look like this:

Step 2 — Install “GPT for Sheets and Docs”

You need this add-on because it’s what connects your Google Sheet to ChatGPT behind the scenes.

1. Go to the top menu in your sheet and click: Extensions → Add-ons → Get add-ons.

This opens the Google Workspace Marketplace, where you can find official add-ons for Sheets and Docs.

2. In the search bar, type GPT for Sheets and Docs.
3. Look for the version created by Talarian (it’s the verified developer).

Step 3 — Verify the Installation

1. Once installation finishes, go back to your Google Sheet.
2. Open the top menu again and select: Extensions → GPT for Sheets and Docs.

You should now see the add-on listed there, ready to launch.

If you click it, the sidebar will appear on the right side of your screen as shown below:

Step 4 — Add Your OpenAI API Key

Now that GPT for Sheets and Docs is installed and visible under Extensions, you need to connect it to your OpenAI account.

This gives your spreadsheet permission to send prompts to ChatGPT and receive AI-generated text right inside your cells.

Step 4.1 — Create Your API Key on OpenAI

1. Visit platform.openai.com/account/api-keys. When you’re there, just follow the on-screen directions: OpenAI will walk you through creating your key step by step.
2. Click Create new secret key.
3. Give it a name like Google Sheets Key or My Test Key.
4. Click Create secret key.
5. Copy the key —it starts with sk-....
   ⚠️ You’ll only see it once, so copy it somewhere safe before you close the window.

Step 4.2 — Paste the Key into Google Sheets

1. Go back to your Google Sheet.
2. Open the sidebar: Extensions → GPT for Sheets and Docs → Open.
3. In the sidebar, see where the hamburger menu bar, click on it and then on → API keys

4. Paste your secret key into the field and click Save.

Don’t worry, your API key only connects this sheet to your own OpenAI account. No one else can see or use it.

Below is the API Key Saved on Google Sheets. If you notice you can add other API’s for other AI tools you want to use such as Perplexity, Gemini, Anthropic and more.

The saved key should look like this:

Step 5 — Enable and Use GPT Formulas

Step 5.1 — Enable GPT Functions

This step tells Google Sheets to recognize new AI formulas. Without it, typing =GPT() will just return an error.

Before you can use the =GPT() formula inside your sheet, you have to “turn on” the feature that makes those functions available.

Think of this like unlocking a new set of spreadsheet commands — just like =SUM() or =AVERAGE(), but for AI.

How to Enable GPT Functions

1. In the top menu bar, click:
   Extensions → GPT for Sheets and Docs → Enable GPT functions.
2. You might see a small pop-up at the bottom of the screen saying
   “GPT functions enabled successfully.”
3. Once that message appears, the feature is ready, your sheet can now understand any formula that starts with =GPT().

 

Step 5.2 — Add Your First Prompt

Now let’s test it.

1. In cell A1, type Title
2. In cell B1, type Description
3. In cell C1, type AI Summary
4. In A2, type an idea for example:

AI Writing Tools for Beginners

5. In B2, write a short description of the idea:

A blog post explaining the easiest AI tools new creators can start with.

6. In C2, type your first AI formula:

=GPT(“Suggest 3 catchy titles for this idea:”, B2)

7. Press Enter — the AI will fill in 3 titles.

You will see them appear in cell C2 within a few seconds — usually 2–5 seconds depending on your connection.

Step 5.3 — Expand It to More Ideas

Once your first formula works, you can make it run automatically for every new idea.

1. Click on cell C2 — the one that already has your =GPT() formula.
2. You’ll notice a small blue square in the bottom-right corner of the cell.
3. Click and drag that square down the column to C3, C4, C5 …

Google Sheets will automatically adjust each formula to match its row — so:

• Row 3 uses B3,
• Row 4 uses B4,
• Row 5 uses B5, and so on.

This means every new idea you add in columns A and B instantly gets its own AI-generated result in column C; there is no need to re-type the formula.

For example, I added a description for a blog post about AI generated art. As you can see, the formula worked and generated three title ideas for that topic.

If you prefer to work one idea at a time, you can also just copy the formula into the next empty C-cell instead of dragging. Both ways work the same.

Step 6 — Customize, Test, and Keep Building

You’ve just built your first working AI workflow — a live system where your ideas turn into smart, structured outputs with one formula.

Now that it’s running, here are a few ways to make it your own:

• Change the prompt to generate summaries, hashtags, or post outlines instead of titles.
• Add new columns like Tone, Keywords, or Category to organize your ideas further.
• Experiment with longer descriptions in column B to see how GPT responds.

If you ever get an error, check that your API key is still active and your GPT functions are enabled.

What’s Next

Now that you’ve connected Google Sheets to OpenAI, you can take your workflow further. Explore AI Workflow Automation: The Complete Guide to Smarter Productivity to automate tasks across tools, or revisit AI Writing Tools for Beginners to find new ways to boost your content creation process.