How to Use the GPT Powered by OpenAI Workflow Action

The GPT Powered by OpenAI action brings AI writing right into your workflows. It can draft replies, create email or SMS content, summarize or translate text, and more, so you spend less time writing by hand.

What Is the GPT Action?

The GPT action is a workflow action that uses AI to generate text inside your automations. It responds to whatever trigger starts your workflow, and the text it creates can be used in later steps, like sending an email or SMS or saving it to a contact field.

About pricing: The GPT action is a Premium Action. That means it needs to be enabled on your account, and each use has an additional charge based on how much text it processes (called tokens) and the model you choose. If you don't see it in your workflows yet, see the last question in the FAQ below.

Step 1: Add the GPT Action to a Workflow

1. Create a new workflow or open an existing one.
2. Add the trigger you want to start the workflow.
3. Click to add an action and choose GPT Powered by OpenAI.

Step 2: Set Up the Action

• Model: Choose an AI model from the dropdown. GPT 5 Mini is selected by default. Other options include GPT 5, GPT 5.1, GPT 5 Nano, GPT 4o, GPT 4 Turbo, and GPT 4o Mini.
• Prompt: Tell the AI what you want it to write, for example, "Write a friendly reply to this customer message." You can add custom values and fields like {{contact.first_name}} to personalize the prompt for each contact.
• Temperature (advanced): This controls how creative the response is, on a scale from 0.1 to 1. Higher numbers like 0.8 give more varied, creative responses. Lower numbers like 0.2 give more focused, predictable responses.

Step 3: Use the AI Response in Later Steps

Once the action runs, the AI's response is saved as {{chatgpt.1.response}}. You can use it in any step that comes after the GPT action.

For example, you can:

• Save it to a custom field on the contact
• Use it as the message in an Email or SMS step
• Send it to your team using a webhook or another internal notification

Tip: Test your workflow with a test contact first so you can see exactly what the AI writes before it goes to customers.

Sample Prompts

1. Reply to a customer message

Your name is {{user.name}}. You are a helpful, creative, clever, and very friendly assistant. Generate a best response email to {{contact.name}} from {{user.name}} for the below message. {{message.body}}

2. Create email or SMS content

Generate email content without subject to promote the product in this link YOUR_WEBSITE to {{contact.name}} from {{user.name}}

3. Check whether a message is positive or negative

Just reply only with POSITIVE if the below message has positive intent and NEGATIVE if the message has negative intent. {{message.body}}

You can then use an If/Else step to send the contact down a different path based on the answer.

4. Translate content

Translate the below content from English to DESIRED_LANGUAGE: Hey {{contact.full_name}}, thanks for reaching out. Let us know how we can help you!

Ideas for Using the GPT Action

• Abandoned cart recovery: When an Abandoned Checkout trigger fires, send a personalized reminder.
• Webinar follow-ups: Use the Appointment Status trigger to send attendees a follow-up email after a webinar.
• Appointment confirmations: When Customer Booked Appointment fires, send a confirmation with the booking details.
• Course completion: After Product Completed, send a congratulations message.
• New member onboarding: When someone signs up, send a welcome message with next steps.
• Lead qualification: Use the AI to review incoming lead details, then use other actions to assign a team member or update the lead's status.
• Customer support: When a customer replies, have the AI draft a personalized response based on their question.

Frequently Asked Questions

Can I control how the AI responds?
Yes. Your prompt has the biggest impact, so be specific about the tone, length, and what you want included. You can also adjust the temperature to make responses more creative or more predictable.

Will the AI always get it right?
Not always. AI responses can sometimes be off, so we recommend testing your workflow and reviewing the output before sending it to customers, especially for important messages.

Can I use the GPT action with other workflow actions and triggers?
Yes. The GPT action works with any trigger, and its response can be used in any action that comes after it in the workflow.

I don't see the GPT action in my workflows. How do I get it?
The GPT action is a Premium Action, so it may need to be added to your account before you can use it. Just email our support team at support@captivationhub.com. We'll share the current pricing and help you get it turned on.