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Version: Divi 5

OpenAI API Setup for Form AI (Divi 5)

Before using Form AI in Divi Form Builder, you need an OpenAI API key and usage limits. If you already have a key, go to Step 3.

Prerequisites​

Before setup, confirm:

  • You can access your OpenAI account.
  • Billing is enabled for API usage.
  • Your WordPress site can save Divi Form Builder settings.

Step 1 - Obtaining an OpenAI API key​

  1. Go to OpenAI's platform.
  2. Create an account or log in (email/password or Google/Microsoft).
  3. Click your name (top-right) -> View API keys.
  4. Click Create new secret key and copy the key immediately; you cannot view it again.
warning

Store your key in a secure password manager. Do not share it in support screenshots or chat messages.

Step 2 - Setting monthly usage limits (OpenAI)​

  1. In your OpenAI account, go to Manage Account -> Billing -> Usage Limits.
  2. Set a Hard limit (max monthly usage; requests stop when reached).
  3. Set a Soft limit (you get an email when usage hits this).
  4. Save your changes.

Step 3 - Adding your API key to Divi Form Builder​

  1. In WordPress admin, go to Divi Form Builder Settings (or Divi Engine -> Form Builder Settings) -> Form AI -> OpenAI Settings.
  2. Paste your API key into the input.
  3. Select the OpenAI Model you have access to.
  4. Save, then use the Test option to verify the key and model.

Using more models​

To use a model not in the dropdown:

  1. In OpenAI Model Selection, choose Define Custom Model below.
  2. Enter the model name in Custom model name (see OpenAI pricing; use a model that supports text in/out).
  3. Set the API Endpoint (for example, /chat/completions for most models; see OpenAI models).
note

Not all API keys have access to every model. If you do not have GPT-4 access, you may be limited to GPT-3.

Verify your setup​

Run a quick test and confirm all of the following:

  • The test request succeeds without authentication errors.
  • The selected model returns output.
  • Response time is acceptable for your form experience.
  • No billing-limit warning appears during your test run.

Common failure scenarios​

  • Authentication failed / invalid key: paste the full key again and save.
  • Model not available: switch to a model your account can access.
  • No response after working previously: check whether your hard limit was reached.
  • Request timeout: test with a shorter prompt or a faster model.

What's Next​