New Release Grok 3 vs ChatGPT Head to Head Comparison

The AI world has a new contender: Grok 3, Elon Musk’s latest innovation from xAI, is positioned as ‘the smartest AI on Earth.’ Trained on the Colossus Supercluster, a massive computing infrastructure powered by 100,000 GPUs, it aims to challenge the reigning champion, ChatGPT.

In this head-to-head comparison of AI leaders, we will evaluate Grok3 and ChatGPT across various aspects, including their technical designs, key functionalities, practical performance, and suitable use cases, to provide a clear understanding of what each model brings to the table.

1. ChatGPT: OpenAI’s Continuous Innovation

ChatGPT, developed by OpenAI, launched its latest version, GPT-4.5, on February 28, 2025. Since its debut in 2022, ChatGPT has undergone significant updates, evolving from GPT-3.5 to GPT-4, then GPT-4o (released in May 2024), and now GPT-4.5, with each iteration bringing notable performance improvements.

The new GPT-4.5 builds upon the multimodal foundation established by GPT-4o ("omni"), further refining its capabilities across text, images, audio, and video processing. This latest version offers significantly enhanced processing speeds, improved contextual understanding, and more nuanced responses across all input modalities.

However, the release of GPT-4.5 did not go as smoothly as OpenAI had anticipated. Across various tech forums and social media platforms, users expressed clear disappointment with this version's update. Many pointed out that despite OpenAI's extensive marketing of improvements, the actual user experience revealed that GPT-4.5 performed worse on several critical tasks compared to its predecessor. In user polls on Reddit and X platforms, GPT-4.5's overall ratings fell significantly below expectations, with some experienced users even recommending that people continue using GPT-4o for the time being.Therefore, in the subsequent comparative analysis, we will continue to use the GPT-4o version for testing and comparison.

🔘Core Features and Capabilities

GPT-4o excels in multimodal processing, supporting text, images, audio, and video. Its response speed is twice as fast as GPT-4, enabling real-time interactions ideal for applications like voice assistants and instant messaging. In voice interaction, GPT-4o allows natural conversations, including interruptions, creating a more human-like experience.

ChatGPT offers two modes: Search Mode for browsing the web for up-to-date information, and Reason Mode for enhanced reasoning and in-depth analysis. It also integrates DALL·E 3 for AI image generation and features memory capabilities for coherent conversations.

As one of the most mature AI assistants, ChatGPT enjoys a broad user base and positive feedback. A blogger noted: "While still powerful, recent benchmarks suggest Grok 3 and DeepSeek R1 may excel in complex logic queries. However, ChatGPT remains a top choice for users seeking reliable and user-friendly AI assistance."

2.What is Grok 3?  How to use Grok 3？

Grok3, the latest AI model developed by Elon Musk's xAI, launched on February 18, 2025. As the third iteration in the Grok series, it marks a significant leap forward. According to xAI, Grok3 was trained using 200,000 Nvidia H100 GPUs, delivering 10 times the computational power of its predecessor, Grok-2. In December 2024, xAI secured $6 billion in Series C funding, ensuring robust financial backing for Grok3's development. Notably, the training process was completed in just 92 days following the expansion of the Memphis supercomputer Colossus, showcasing xAI's rapid advancements in AI infrastructure.
Elon Musk took to platform X to announce: "Grok 3 release with live demo on Monday night at 8pm PT. Smartest AI on Earth." This statement quickly drew significant attention from the tech community. Known for his roles at Tesla and SpaceX, Musk’s announcements are always closely followed, and the introduction of Grok3 by his xAI company is viewed as a direct challenge to OpenAI.

xAI post link： https://x.com/xai

Let’s recap the highlights from the Grok3 live launch event:

In benchmark tests, Grok without reasoning capabilities showed remarkable performance, significantly outperforming other models. Notably, Grok3 consistently led the rankings while GPT remained at the bottom, suggesting OpenAI may need to address this competitive challenge.

When it comes to reasoning capabilities, Grok 3's performance was equally impressive. Across three key domains - mathematics, science, and coding - Grok 3's reasoning model demonstrated superior results compared to competitors like ChatGPT o3 mini and DeepSeek R1.

🟢 Grok 3 Core Features and Capabilities

Grok3’s most notable feature is its three operational modes: Think, Big Brain, and DeepSearch.

• Think Mode activates Grok3’s reasoning process, breaking down problems into smaller steps or "thoughts," with most of the process visible to users, though some parts are hidden to prevent knowledge extraction. This mode uses a lighter "mini" version of Grok3, making it ideal for solving simple queries in math, science, and programming.
• Big Brain Mode is similar to Think Mode but utilizes the full version of Grok3. While it takes longer to process, it delivers more accurate, insightful, and detailed responses. This mode is particularly suited for scientific research, multi-layered AI tasks, and highly complex problem-solving scenarios.
• DeepSearch Mode allows Grok3 to browse the internet, verify sources, and synthesize real-time information before generating a final answer. Unlike standard language models, Grok3 can access new information when DeepSearch is active, making it perfect for tasks like news gathering, market tracking, and fact-checking. This mode displays a progress bar, shows the thought process, and provides direct links to source materials.Beyond these modes, Grok3 also offers multimodal analysis capabilities, enabling it to analyze X user profiles, posts, linked content, and uploaded files (such as images or PDFs). Additionally, it can generate images based on user confirmation and edit its previous image outputs.

Grok3’s launch sparked widespread discussions across social media. Shortly after the release, Elon Musk announced: "For a short time, Grok 3 is available for free to all!" This move allowed more users to experience this new AI model firsthand.Here is some feedback about Grok3 from former OpenAI founding team scientists, posted on X. This article has triggered intense discussions among AI enthusiasts on X regarding Grok3 and its search functionality. The link is here.

❓How to use grok 3?

Grok 3 is now live on the X platform, and you can also directly access the Grok section within the X app to try out the current Grok 3 beta version.It appears that to use the full version of Grok 3 in the future, you will need an X Premium or Premium+ subscription, with Premium+ offering additional features like 'Think' and 'DeepSearch'.You can access Grok 3 via the web at x.com/i/grok or grok.com, and through mobile apps on iOS and Android in select countries.

3.Grok 3 VS. ChatGPT：Real-world comparison

Forget the tech jargon—what really matters is how these models perform when users put them to work: coding games, solving math problems, generating images, and tackling tricky questions. On X, they’re like two rival wizards, conjuring solutions while the crowd cheers (or boos). From lightning-fast game code to brain-busting equations, this section dives into X’s hottest posts to see how Grok 3 and ChatGPT stack up in real-world use. Who’s the ultimate user’s champ? Let’s find out through the buzz and battles on X.

Game Code Generation: Grok 3’s Game-Making Fast or Flashy?

Grok 3 is a coding speedster, especially when it comes to game development, leaving users stunned by its efficiency and creativity. Whether you're building a simple prototype or a fully-fledged game, it seems Grok 3 has become the go-to assistant for developers looking to save time and still deliver impressive results.

Take Alvaro Cintas (@dr_cintas) on X, for example. He shared his incredible experience:"Grok 3 is an incredible AI coding assistant. After a couple of hours and +1000 lines of code generated, I have now a fully functional 2D vertical jumping game. With different heroes, monsters, platforms, difficulties, and lives."

In just a few hours, Alvaro went from concept to completion, creating a polished game packed with characters, challenges, and dynamic gameplay.

But it doesn’t stop there. Another user, Ben Dower (@nobody_qwert), was equally impressed, sharing how Grok 3 generated a simple 3D game in one shot. The ease with which Grok 3 handles even the complexities of 3D environments highlights its versatility and advanced coding capabilities.

And then there’s Dan (@Daniel_Farinax), who took things to the next level:"I built one of the first 3D single & multiplayer games with Grok 3! Think 3D movement, raycasted worlds. Here’s the journey."

Dan’s project demonstrates that Grok 3 isn’t just for quick prototypes—it’s capable of supporting full-scale, multiplayer-ready 3D games with advanced mechanics like raycasting and world-building.Danny Limanseta (@DannyLimanseta) shared how Grok 3 helped him build a Vampire Survivors-like game with iterative prompting，Remarkably, he didn’t write a single line of code during the process, showcasing Grok 3’s ability to integrate creative assets and streamline game development.

When compared to ChatGPT’s coding capabilities, Grok 3 stands out for its speed, precision, and ability to handle larger, more complex projects with minimal user intervention. While ChatGPT remains a strong contender for writing smaller scripts or debugging, Grok 3 seems to thrive in scenarios where rapid prototyping and large-scale generation are key.The screenshots from these X users’ posts speak for themselves—Grok 3 is quickly becoming the AI of choice for developers who want to turn their ideas into reality faster than ever before.

Tools Code Generation: Grok 3’s AI Agents—Smart or Sorcery?

Beyond game development, Grok 3 is proving itself as a powerhouse in building real-world applications—like AI customer support agents. Imagine creating a fully functional AI assistant team by simply feeding the AI some documentation. Sounds like magic? Not for Grok 3.Take Mervin Praison (@MervinPraison) on X, for example. He shared how Grok 3 made it effortless to create an AI customer support agent:

"Just created Grok 3 AI Customer Support Agents 🔥🤖 Grok 3 reads docs & builds the agent🔍 DeepSearch for in-depth search"

From reading documentation to setting up a Flask web app and deploying it via Replit, Grok 3 handled the entire process with zero manual coding required. The result? A fully functional AI agent ready to tackle customer queries in record time.Shubham Saboo (@Saboo_Shubham_) echoed this sentiment, sharing how Grok 3 enabled him to build an entire team of customer support AI agents in less than 2 minutes:

"Grok 3 builds a Customer Support AI Agent team just by going through the documentation. Replit lets me run, test, and deploy that agent team directly from the browser. All of this in less than 2 mins."

The speed and simplicity of Grok 3’s process are hard to ignore. It doesn’t just stop at generating code—it integrates seamlessly with tools like Replit, making it easy to test and deploy applications directly from the browser.Compared to ChatGPT, which is excellent for generating snippets or assisting with debugging, Grok 3 stands out for its end-to-end automation. It’s not just an assistant—it’s practically a co-developer, capable of handling everything from understanding complex documentation to deployment.The screenshots from these posts showcase how Grok 3 is revolutionizing the way developers approach AI-powered solutions. Whether it’s games or customer support agents, Grok 3 is proving that coding doesn’t have to be tedious—it can be fast, functional, and, dare we say, fun.

Math Problem-Solving: Speed vs. Scholarly Showdowns

When it comes to solving math problems, Grok 3 and ChatGPT have sparked plenty of debate among users about which one performs better. On X, user @luismbat shared an impressive story about Grok 3 solving a notoriously difficult math problem:

"None of the top 500 contestants in the 2025 Putnam competition fully solved this problem. Grok 3 (Think) found the solution in ~8 minutes."  

On the flip side, not everyone was impressed. User WP (@WPipperger) tested both models on a simpler graphing task and had this to say:

"ChatGPT threw out the graph in less than a second, while Grok 3 spent over a minute and still couldn’t manage it. Honestly, not so impressed with Grok."  
Curious about these mixed reviews, we decided to test both models on a Level 5 problem from the MATH-500 dataset. This dataset is known for its complexity, featuring problems that require advanced mathematical analysis. The challenge we chose was no exception:

Both Grok 3 and ChatGPT were put to the test, and the results were impressive. However, their approaches differed. Grok 3 took a more cautious and iterative path, carefully breaking down the problem into smaller components and double-checking its logic along the way. This methodical approach took longer but felt thorough. ChatGPT, on the other hand, worked faster, delivering the solution in less time while maintaining clarity and precision.  
For simpler tasks, ChatGPT’s speed often gives it the edge. It can handle straightforward problems like graphing with lightning speed, whereas Grok 3 may struggle or take longer.  
But for complex, high-level problems, Grok 3’s ability to reason deeply and handle intricate challenges shines through. Grok 3 can tackle problems that even top human mathematicians find daunting.  
For quick calculations or visualizations, ChatGPT is the clear winner. But for advanced mathematical analysis, Grok 3’s methodical approach might be the better choice.

Image Generation: Creativity vs. Consistency

When it comes to image generation, Grok 3 and ChatGPT are stepping into a space where creativity meets technical precision. But how do they compare in real-world use? Users on X have shared their experiences, and the results are as varied as the prompts themselves.  

Take Poonam Soni (@CodeByPoonam), for instance, who praised Grok 3’s ability to create stunning logos:

"Grok 3 can generate incredible logos. Now, anyone can create a logo with AI in no time. 10 wild examples!"  

On the other hand, not all feedback has been glowing. User Le Crapaud (@Zoltan47) shared a side-by-side comparison of Grok 3 and ChatGPT, using the same prompt for an image. While ChatGPT delivered a polished result, Grok 3 struggled outside of photorealistic styles. As Le Crapaud put it:

"Grok 3 still has many difficulties once you step outside photorealism. Not great on this front."  

Curious about these mixed reviews, we tested both models ourselves.

For tasks like logo creation and photorealistic images, Grok 3 excels, delivering clean and professional designs that are well-suited for branding or marketing purposes.

However, when the focus shifts to more abstract or imaginative prompts—  **floating island library at sunset, with glowing pages, floating books, and a bridge to a cherry blossom-covered island**

ChatGPT often takes the lead, offering more visually cohesive and artistically appealing results.  The distinction seems to come down to their strengths. Grok 3 prioritizes precision and reliability for specific use cases, such as realistic renders or structured designs, while ChatGPT showcases greater flexibility and creativity, making it a better fit for artistic and unconventional prompts.  

If you’re after polished, professional visuals or photorealistic accuracy, Grok 3 is a solid pick. But if your project demands inventive, out-of-the-box compositions, ChatGPT might be the better option.

Summary: Grok 3 VS ChatGPT All in Monica AI

When it comes to real-world tasks—be it game development, data analysis, solving tough math problems, or creating stunning visuals—Grok 3 and ChatGPT each have their own strengths. Grok 3 thrives in tasks that demand precision and depth, like building complex applications or tackling advanced mathematical challenges. On the other hand, ChatGPT’s speed and adaptability make it a great choice for creative projects, quick problem-solving, or generating consistent artistic results.

But here’s the exciting part: what if you didn’t have to choose between them? Monica AI, an innovative all-in-one assistant, seamlessly integrates both Grok 3 and ChatGPT into a single platform. With Monica AI, you can switch between these two powerful models effortlessly, leveraging their unique strengths for different tasks—all without ever leaving the tool.  With Monica, you can tap into the best of Grok 3 and ChatGPT without compromise, making it easier than ever to tackle any project, from coding to design and beyond.

Whether you need Grok 3’s precision for coding and problem-solving or ChatGPT’s creativity for brainstorming and design, Monica AI gives you the best of both worlds. It’s not just an AI assistant; it’s a game-changer that ensures you always have the right tool for the job. Have a free Test for Monica.

4.Grok3 vs ChatGPT：Major Analysis

💡Advantages of Grok3

1. Real-time Information Access: DeepSearch mode can fetch the latest information and provide verifiable source links, making it exceptional for scenarios that require up-to-date data.
2. Transparency in Thought Process: The Think mode reveals the reasoning behind answers, enhancing interpretability and trustworthiness for users to understand the AI's thought process.
3. Handling of Technical Details: Grok3 excels in explaining complex scientific and technical concepts, making it ideal for fields that require specialized knowledge.
4. Timely Information: Grok3 doesn’t have a fixed knowledge cutoff, enabling it to provide the most current information, which is crucial in fast-evolving industries.
5. Source Citation: The ability to provide links to sources strengthens credibility and allows users to verify and explore information further.

🔘 Disadvantages of Grok3

1. Creative Expression: Grok3 struggles with creative writing and emotional expression, often producing output that feels less natural compared to ChatGPT’s fluid and engaging style.
2. Code Efficiency: While the code it generates is functional, it may not be as optimized or efficient as that produced by ChatGPT.
3. Language Fluidity: Especially in non-English languages, Grok3’s output can sometimes feel less natural and coherent than ChatGPT’s.
4. Security Boundaries: Some users report that in developer mode, Grok3 might provide less reliable responses, especially when the model “freely” answers certain questions.

💡Advantages of ChatGPT

1. Creative Content Generation: ChatGPT excels in creative tasks such as story creation, marketing copy, and ad text, with a rich and varied use of language.
2. Language Fluidity: The model produces more natural, smooth expressions, with coherent paragraph transitions. It is especially strong in handling multiple languages.
3. Code Quality: ChatGPT generates highly efficient, optimized code, with detailed comments, making it suitable for software development and programming tasks.
4. User-Friendliness: ChatGPT’s responses are more approachable and easier to understand, catering to a wide range of users.
5. Multilingual Capabilities: ChatGPT performs exceptionally well in handling non-English languages, particularly Chinese, where it offers natural and fluent expressions.

🔘 Disadvantages of ChatGPT

1. Information Timeliness: ChatGPT has a knowledge cutoff date, meaning it may not be able to provide the latest information, requiring users to verify the details themselves.
2. Source Citation: Unlike Grok3, ChatGPT typically doesn’t provide links to source materials, which can make it difficult to confirm the accuracy of the information.
3. Opaque Thought Process: ChatGPT does not show the underlying reasoning behind its responses, making it harder for users to understand how conclusions are drawn.
4. Security Limitations: ChatGPT is more cautious and may refuse to answer certain questions due to strict safety guidelines, which might limit its usefulness in some cases.

5.Grok3 vs ChatGPT：Use Cases and Price

🔘 When to Choose Grok3？

1. Research and Academic Work: Grok3’s DeepSearch mode and ability to provide detailed citations make it ideal for research, academic writing, and technical explanations that require the most current data.
2. Data Analysis and Decision Support: For scenarios where understanding the thought process and accessing verifiable information is critical, Grok3’s Think mode offers transparency in reasoning and source links.
3. Real-Time Information Monitoring: Grok3 is the preferred choice for scenarios requiring real-time data, such as market analysis, news tracking, or fact-checking, where up-to-date information is essential.
4. Scientific and Technical Exploration: Grok3 shines in explaining complex concepts in science and technology, making it a perfect tool for anyone needing in-depth technical knowledge.
5. Critical Thinking Training: Educational scenarios that focus on understanding reasoning and logic would benefit from Grok3’s clear and transparent process of explanation.

🔘 When to Choose ChatGPT？

1. Creative Writing and Content Creation: For tasks like writing stories, creating marketing content, or drafting ad copy, ChatGPT’s rich language capabilities and creative flexibility make it the better choice.
2. Programming and Software Development: ChatGPT excels in generating optimized, efficient code with clear explanations, making it ideal for software development tasks.
3. Multilingual Communication: When handling non-English languages, especially Chinese, ChatGPT performs better in producing natural, fluent text.
4. Education and Simplified Scientific Explanation: ChatGPT’s user-friendly style and ability to break down complex concepts into understandable language make it a great tool for educational purposes.
5. Everyday Assistant: For general queries and reliable, consistent responses, ChatGPT is a more established and reliable assistant, offering easy-to-understand answers for a wide variety of users.

💰 Price and Accessibility Comparison

• Grok3: Currently available primarily through X platform’s Premium+ subscription (approximately $40 per month). xAI also plans to introduce an independent SuperGrok subscription tier. Elon Musk briefly opened Grok3 for free use, but this was only a temporary measure.

• ChatGPT: Offers a free version (with usage limits) and a Plus subscription ($20 per month), as well as enterprise and API access options. Its pricing strategy is more flexible, catering to users with different budgets.

6.Conclusion: The Future of AI Assistants

Grok3 and ChatGPT represent two distinct directions in the evolution of AI assistants. Grok3 emphasizes real-time information access, transparent thought processes, and technical precision, while ChatGPT focuses on creative expression, language fluency, and user-friendly experiences.For professionals who need the latest information and in-depth analysis, Grok3 may be the better choice. For creative workers, developers, and everyday users seeking a reliable assistant, ChatGPT is likely more suitable.

If you’re interested in experiencing the capabilities of both Grok3 and ChatGPT firsthand, Monica offers a seamless solution. You can access both models with a single subscription fee. As a comprehensive AI assistant, Monica AI integrates the latest APIs from both Grok3 and ChatGPT, allowing you to test and compare their functionalities directly on the platform. Besides, Monica AI integrates many popular large language models (LLMs) as well as Gemini 2.0 Pro/Mini, DeepSeek R1 & V3, Claude 3.7 Sonnet, and Llama 3.1 405B.

Here to try Monica AI, an all-in-one assistant tool that integrates the best of both worlds.Whether you’re a professional, a creative, or an everyday user, Monica IM provides a user-friendly interface and advanced features to meet your needs. Curious about how these AI models perform in real-world scenarios? Visit the Monica website and try it out you today—experience the future of AI at your fingertips!