How to write source-backed WordPress drafts with xAI Grok

By Luis Rita · 16 October 2026

AI Blog Writer with Sources is a free WordPress plugin that turns a brief and the pages you trust into a cited draft, on your own AI key. This tutorial sets it up with xAI’s Grok models: getting a key, adding it to WordPress, choosing a model, and writing a first draft. It takes about ten minutes.

1. Get an API key

You need a xAI API key, from the xAI Console:

1. Sign in to the xAI Console. An X Premium subscription is not needed and doesn’t include API usage.
2. Add a payment method and load credits for your team; the API bills against that balance.
3. Open API Keys, create a key, and copy it. It is shown only once.
4. Check the console for spending limits and for any data-sharing offers before you opt in: some promotional credits are tied to sharing your API data.

Treat the key like a password: anyone who has it can spend your credits.

2. Add the key to WordPress

1. Install and activate AI Blog Writer with Sources from Plugins → Add New Plugin.
2. Open AI Blog Writer → Settings, choose xAI as the AI provider, and click Save Changes.
3. Paste the key into the API key field and save again. It is encrypted before it is stored, and never shown again or sent to the browser.
4. Click Test connection. This sends only the key and a request for the list of models, no content.

To keep the key out of the database, define it in wp-config.php instead:

define( 'AIBCG_XAI_API_KEY', 'your-key' );

3. Choose a model

Pick the model under Default model in Settings. The plugin offers:

Start with Grok 4.5, the default. Grok 4.7 is xAI’s most capable model at the same price; we haven’t evaluated it with the plugin’s prompts yet. Use Grok 4.3 when speed and cost matter more than depth. Which models you can use also depends on your xAI account.

4. Write your first draft

1. Open AI Blog Writer → New article and give it a topic.
2. Paste three to five pages you would cite yourself under Source URLs.
3. Choose Guided to review the sources and the outline before anything is written.
4. Create the draft, then open it in the block editor. Each claim cites the source it came from.

The getting started guide walks through the brief in detail.

Costs and limits

xAI bills your account for every request: the outline, the draft, and tools such as section rewrites. The plugin records the usage of each job and estimates its cost from the model’s list price, and Usage and cost shows the month’s estimate for the site. Set a monthly cost ceiling in Settings, and a spending limit with xAI, so neither can surprise you; xAI’s invoice is the final figure. See usage and cost ceilings.

Data and privacy

When a job runs, the plugin sends xAI the brief, the writer profile, and the notes extracted from your selected sources. It never sends WordPress credentials, other database content, or visitor data. Read xAI’s terms of service and privacy policy, and don’t opt your team into sharing API data if you send client or unpublished material. The full list of what is sent is in Privacy and external services.

If something goes wrong

• The key is rejected (provider_http_401): create a new key and save it again.
• Rate limit or quota (provider_http_429): check your balance and limits with xAI.
• “Selected model is unavailable”: choose another model, save, and test again.

More fixes are on the troubleshooting page.