1. Data Sources: ChatGPT relies on a diverse dataset from sources like Common Crawl and books, while Grok uses real-time data from the X platform, offering freshness and relevance.
2. Ownership: ChatGPT is developed by OpenAI, while Grok is created by Elon Musk's team at 'xAI,' affecting their development and direction.
3. Market Availability: ChatGPT is widely accessible since its public launch in November 2022, whereas Grok is in beta and limited to U.S. users, with plans to expand to X Premium+ subscribers.
4. Pricing: ChatGPT has a free and premium version at $20 per month, providing real-time updates, while Grok is available at a lower monthly cost of $16 for X Premium+ users.
5. Communication Style: Grok has a witty and rebellious tone in its responses, offering a unique user experience compared to ChatGPT's style.
