Grok 3 vs ChatGPT

• Blockchain Council
• February 20, 2025

Artificial intelligence is evolving at lightning speed. Every few months, a new model enters the race, claiming to be the best. On February 17, 2025, Elon Musk announced the launch of Grok 3, claiming it to be the best AI model ever. But between Grok 3 and ChatGPT, which one actually delivers?

Is Grok AI better than ChatGPT? Does it outperform ChatGPT for coding and other purposes? What about pricing? We’ve done the deep dive, here’s everything you need to know.

Grok 3 vs ChatGPT: What Are They?

Grok 3: The Challenger 

Launched on February 17, 2025, Grok 3 is xAI’s most advanced AI model yet. Elon Musk claims it’s “scary smart” and capable of revolutionizing human problem-solving.

Unlike its rivals, Grok 3 is built on xAI’s Colossus supercomputer, running on 200,000 Nvidia H100 GPUs—ten times the power of Grok 2.

This AI integrates real-time web search and X (Twitter) posts using its DeepSearch tool, making it a beast for research and current events.

ChatGPT: The AI That Started It All

ChatGPT has been the AI leader since 2022. OpenAI constantly improves it, with GPT-4o and o3-mini leading in 2025.

Unlike Grok 3, ChatGPT isn’t locked to X users. It’s available across platforms, making it widely accessible. While Grok focuses on raw speed, ChatGPT is designed for structured reasoning and creative writing.

Grok 3 vs ChatGPT Features: What’s Under the Hood?

Grok 3’s Features

• Think Mode – Breaks down solutions step-by-step in real time.
• Big Brain Mode – Enhances complex reasoning and problem-solving.
• DeepSearch – Scans the web and X for real-time updates.
• Multimodal Abilities – Handles text and images, voice support coming soon.
• Powerful Coding Abilities – Created a Tetris-Bejeweled game in seconds during its demo.

ChatGPT’s Features

• Conversational Intelligence – Natural, context-aware discussions.
• Creative Writing – GPT-4o excels in poetry, storytelling, and essays.
• o3-mini’s Logical Thinking – OpenAI improved step-by-step reasoning, similar to Grok’s Think Mode.
• DALL-E 3 Image Generation – Creates images alongside text, something Grok 3 doesn’t do yet.
• Voice Mode is Live – Unlike Grok 3’s upcoming feature, ChatGPT’s voice assistant is already active.

Language Understanding and Generation

Both Grok 3 and ChatGPT are designed to understand and generate human-like text. However, Grok 3 has been reported to have a slight edge in language understanding tests, with a 94.2% accuracy compared to ChatGPT’s 92.8%. 

Feature Breakdown

Grok 3 wins in research, coding, and raw problem-solving. ChatGPT dominates in creativity, structured outputs, and conversations. 

Grok 3 vs ChatGPT for Coding: Who Helps Developers More?

In coding tasks, Grok 3 demonstrates superior performance, being 1.2 times faster than ChatGPT, with an average response time of 0.8 seconds. Additionally, Grok 3 shows a 15% improvement in solving complex programming challenges. 

Regarding mathematical reasoning, Grok 3 outperforms its rivals in various technical domains. Benchmark results indicate that Grok 3 scores higher than models like Gemini-2 Pro, DeepSeek V3, GPT-4o, and Claude 3.5 Sonnet in math (AIME), science (GPQA), and coding tasks (LiveCodeBench).

Grok 3’s Coding Edge

• 79.4% on LiveCodeBench, proving high-level programming capabilities.
• Generated a full game in seconds in its launch demo.
• Optimized for real-time debugging and fast solutions.

ChatGPT’s Strength in Coding

• Great for structured explanations and documentation.
• o3-mini boosts logic-based programming support.
• Better for beginner-friendly learning and clear guidance.

Final Verdict

If you want instant code generation, Grok 3 is better. If you need well-structured, readable code with explanations, ChatGPT wins.

Performance Benchmarks: Who’s Actually Smarter?

Grok 3’s Power on Paper

• 93.3% on AIME 2025 math test – Higher than ChatGPT.
• 1402 score on Chatbot Arena – First AI to ever break 1400.
• 92.7% on MMLU, solidifying its problem-solving dominance.

ChatGPT’s Steady Performance

• o3-mini scored 48% on AIME 2025 – Lower than Grok 3.
• GPT-4o maintains 93.1% on MMLU, keeping it highly competitive.
• OpenAI’s Rex Asabor claims o3-mini might surpass Grok 3, but his chart isn’t publicly verified.

What This Means

Grok 3 leads in raw math and reasoning power, but ChatGPT’s structured intelligence keeps it competitive.

Training Models & Architecture: What Powers These AIs?

ChatGPT’s Training Data

• Common Crawl – Massive dataset of web pages.
• WebText2 – Filtered Reddit content with high engagement scores.
• Books1 & Books2 – Literature datasets for long-form coherence.
• Wikipedia – Full database for factual accuracy.
• Plus users can access real-time web crawling.

Grok 3’s Training Data

• Details are largely undisclosed.
• Runs on Colossus, xAI’s custom supercomputer.
• Uses real-time web crawling for updated responses.

ChatGPT has more transparency in training data, while Grok 3 relies on xAI’s proprietary methods.

Grok 3 vs ChatGPT Pricing: What’s the Cost?

Grok 3’s Pricing

• Currently free, but only while xAI tests its servers.
• X Premium+ required after testing ($40/month).
• Rumored SuperGrok plan ($30/month), but not confirmed yet.

ChatGPT’s Pricing

• Free access to GPT-4o for basic use.
• $20/month for ChatGPT Plus, unlocking o3-mini and DALL-E 3.
• More affordable and available everywhere.

Which One’s the Better Deal?

For casual users, ChatGPT is the clear winner. If you need Grok 3’s advanced capabilities, be ready to pay more and use X Premium+.

Real-World Uses: Where Do These AI Models Excel?

Grok 3’s Strengths in Action

• Crushed a real-time coding challenge—built a Settlers of Catan webpage in seconds.
• Used DeepSearch to pull research on renewable energy faster than competitors.
• Handles logic-based problem-solving better than ChatGPT.

ChatGPT’s Everyday Wins

• Wrote a stunning sonnet, praised by The Guardian.
• Powers thousands of businesses for customer service and email writing.
• Helps students ace logic puzzles and technical explanations.

Who’s Better?

Grok 3 is best for coding, research, and real-time data. ChatGPT is unbeatable for writing, conversation, and structured learning.

Which AI Should You Choose?

Feature	Grok 3	GPT-4o
Computational Power	Trained on xAI’s Colossus supercluster with over 100,000 Nvidia H100 GPUs	Utilizes OpenAI’s advanced infrastructure
Context Window	128,000 tokens	Up to 128,000 tokens
Multimodal Abilities	Processes text and images	Processes text, images, and audio
Performance (MMLU)	92.70%	93.10%
Real-Time Web Search	Yes (via DeepSearch)	Yes
Accessibility	Available to X Premium+ subscribers	Accessible through ChatGPT with subscription options
Pricing	Subscription-based	Free and paid tiers available

Latest Updates (2025): What’s Next for These AIs?

Grok 3’s New Developments

• iOS app launched on February 20.
• Voice Mode coming in the next few weeks.
• Still free for now, but that won’t last long.

ChatGPT’s New Improvements

• o3-mini launched in January 2025, improving logical reasoning.
• OpenAI teasing an o3 update to challenge Grok 3’s math skills.
• Business API updates make ChatGPT better for companies.

Conclusion

Both Grok 3 and ChatGPT bring unique strengths to the table. Grok 3 leads in raw computational power, coding efficiency, and real-time research. It processes complex problems quickly and pulls live data from the web, making it a strong choice for developers, analysts, and advanced users. However, it comes with a higher price tag and is tied to X Premium+.

On the other hand, ChatGPT remains the go-to AI for natural conversation, structured reasoning, and creative writing. It’s accessible across multiple platforms, making it ideal for writers, businesses, and general users. While it may not match Grok 3 in sheer speed, it excels in producing polished, well-structured outputs and remains the more affordable option.

Which One Should You Choose?

• Pick Grok 3 if you need fast coding support, real-time web search, and advanced problem-solving.
• Go with ChatGPT if you value affordable pricing, better creative writing, and a widely available AI assistant.

Both chatbots are pushing AI forward, but their focus areas differ. The best option depends on how you plan to use it.