Grok (xAI) Setup

Overview

xAI provides Grok 4.5, Grok 4.3 and Grok 4.20 Reasoning. Grok models are known for a conversational, engaging writing style and good awareness of what is currently being discussed, which makes them a solid choice for LinkedIn content.

Step 1 - Create an xAI account

1. Go to console.x.ai
2. Create an account or sign in
3. Verify your email

Step 2 - Set up billing

1. In the xAI Console, navigate to billing settings
2. Add a payment method, either a credit or debit card
3. xAI bills pay-as-you-go, so you only pay for what you use

Step 3 - Generate your API key

1. Go to console.x.ai/team/default/api-keys
2. Click Create API Key
3. Copy the key, which starts with xai-

Step 4 - Configure in LinkedGrow

1. Go to Settings > AI API in LinkedGrow
2. Click the Grok tab
3. Paste your API key in the key field
4. Select a model from the dropdown
5. Click Save

Available models

Model	Best for	Cost per post	Monthly estimate (30 posts)
Grok 4.5	Highest quality and fastest	~$0.013	~$0.39
Grok 4.3 (Recommended)	Best value for quality	~$0.006	~$0.18
Grok 4.20 Reasoning	Step-by-step reasoning tasks	~$0.006	~$0.18

Recommendation: Grok 4.3 gives you engaging, natural-sounding LinkedIn posts at a low price. Move up to Grok 4.5 when you want xAI's strongest and fastest model, and pick Grok 4.20 Reasoning when a post needs the model to work through something step by step.

Pricing details

xAI bills by token, and 1,000 tokens covers roughly 750 words.

Model	Input (per 1M tokens)	Output (per 1M tokens)
Grok 4.5	$2.00	$6.00
Grok 4.3	$1.25	$2.50
Grok 4.20 Reasoning	$1.25	$2.50

xAI doubles these rates for prompts over 200,000 tokens. LinkedGrow prompts stay well under that limit, so the rates above are what you will actually pay.

Key format

Grok API keys start with xai- followed by a string of characters.

Monitoring your spending

Track your usage in the xAI Console dashboard. Review your API call history and costs to monitor spending.