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Grok 3 vs. ChatGPT o3-mini: A Detailed Comparison of AI Performance and Accessibility

 

Elon Musk's xAI has officially released Grok 3 on February 17, accompanied by a live broadcast. However, the model is currently only accessible to X (Twitter) Premium and select Grok Premium users. Based on available information, we have compared Grok 3 with OpenAI's ChatGPT o3-mini.

1. Performance and Functionality

Grok 3:

  • Trained with over 10 times the computing power compared to Grok 2.
  • Excels in mathematical reasoning (AIME 2025) and scientific domains (GPQA).
  • Enhances deep problem-solving and advanced reasoning capabilities.

ChatGPT o3-mini:

  • Improved reasoning capabilities enable step-by-step problem-solving and self-correction.
  • Demonstrates exceptional performance in mathematics, coding, and science, with a 24% increase in response speed compared to previous models.
  • Focuses on reducing hallucinations (misinformation generation).

2. Response Speed and Cost

Grok 3:

  • Takes more time to process deep reasoning and complex problem-solving.
  • Requires higher computing resources to support advanced functionalities, potentially increasing costs.

ChatGPT o3-mini:

  • A lightweight model optimized for fast responses with a focus on cost efficiency.
  • Offers a "Think" mode for in-depth reasoning but generally prioritizes quick responses.

3. Accessibility and Pricing

Grok 3:

  • Currently available to X's Premium+ subscribers and xAI's SuperGrok subscribers.
  • Future availability through xAI's enterprise API is planned.
  • Premium+ subscription is priced at $40 per month.

ChatGPT o3-mini:

  • Accessible via OpenAI's ChatGPT platform, with limited features available for free users.
  • Advanced functionalities are available through a paid subscription.

4. Conclusion

Grok 3 and ChatGPT o3-mini each have unique strengths and features.

  • Grok 3 is designed for deep reasoning and powerful computational capabilities, making it ideal for complex problem-solving.
  • ChatGPT o3-mini prioritizes fast responses and cost efficiency, making it more suitable for general use.

Choosing the right model depends on specific user needs and priorities.

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