xAI, the company founded by Elon Musk, has released a new version of its AI model — Grok 4. According to the developers, this model is the most powerful in the world and offers significant improvements in reasoning, academic tasks, and tool use. Grok 4 is now available on the GPTunneL platform, where users can test its capabilities.
What is Grok 4
Grok 4 is xAI's newest AI model, released on July 10, 2025. The model is designed for complex tasks that require deep reasoning, processing large volumes of context, and using various tools. Grok 4 has a context window of 256,000 tokens, allowing it to process and analyze extensive texts and data.
According to Elon Musk, "on academic questions, Grok 4 is better than PhD level in every subject, no exceptions." However, he admits that at times, "the model lacks common sense."
How it differs from Grok 3
Compared to the previous version, Grok 3, the new model brings a number of improvements:
- Larger context window: increased from 128,000 to 256,000 tokens, improving work with long texts. For example, you can upload a short book, an article, or a PDF file. For comparison, 100,000 tokens is roughly 75,000 words.
- Better performance: in tasks involving reasoning and academic knowledge, such as writing papers, generating scientific or business hypotheses, and data analysis.
- Multimodal architecture: support for various data types, including text, code, images, tables, PDFs, files, and more.
- Multi-agent mode (Grok 4 Heavy). Several agents inside Grok 4 Heavy solve a task in parallel, compare answers, and then produce the final result. This approach improves accuracy on complex logical tasks.
Usage examples on GPTunneL
Grok 4 is ideal for tasks where logic, context, and accuracy matter. Here are some examples of its use:
- Analyzing large volumes of data: processing and interpreting complex data.
- Scientific research: solving tasks that require deep knowledge across various fields.
- Software development: writing and optimizing code.
- Solving math problems: performing complex calculations and proofs.
Comparison with other models
Grok 4 shows outstanding results compared to other leading models, such as OpenAI o3, Google's Gemini 2.5 Pro, and Anthropic's Claude 4 Opus. Below is a table with benchmarks, including well-known tests for coding knowledge (SWE-bench), math (MATH), scientific reasoning (GPQA Diamond), and language understanding (MMLU-Pro):
| Model | Humanity's Last Exam (no tools) | SWE-bench (coding) | GPQA Diamond | MMLU-Pro | MATH | GSM8K | Context window |
|---|---|---|---|---|---|---|---|
| Grok 4 | 25.4% | 72–75% | 88% | 87% | 76% | 92% | 256,000 tokens |
| Grok 4 Heavy | 44.4% (with tools) | – | – | – | – | – | 256,000 tokens |
| OpenAI o3 | 21% | 71.7% | 83.3% | 85% | 70% | 89% | Not specified |
| Claude 4 Opus | 10.7% | 72.5% | 83.3% | 84% | 68% | 87% | 200,000 tokens |
| Gemini 2.5 Pro | 21.6% | 63.2% | 84.0% | 83% | 72% | 90% | 1,000,000 tokens |
Source: xAI, TechCrunch
Independent tests by Artificial Analysis, which xAI gave early access to the model, confirmed that Grok 4 outperforms its competitors. After running all benchmarks, Grok 4 received a score of 73, higher than OpenAI o3 (70), Google Gemini 2.5 Pro (70), and Anthropic Claude 4 Opus (64). For the first time, the top spot in Artificial Analysis's combined ranking went to a model not made by the "big three" (OpenAI, Google, Anthropic).
How to get access on GPTunneL
The standard Grok 4 model is available on the GPTunneL platform, and usage costs can be found on the pricing page. Users can test its capabilities by following the link. In addition, the cost of using Grok 3 has been reduced by 30%, making the previous version more affordable for users.
Who should try Grok 4, and what to expect next
Grok 4 will be especially useful for those working with large volumes of text and complex tasks — science, engineering, education, and analytics projects. Developers will appreciate its capabilities for generating and debugging code, while students will find it useful for solving math and logic problems.
In the coming months, xAI plans to release new versions: in August — Grok 4 Code, followed by a multimodal agent and a video generator. The model will keep evolving actively — we at GPTunneL are tracking updates and promptly adding new releases to our platform.