Grok 4 by xAI:
Intelligence Beyond Limits
Excels in reasoning, multimodal fusion, and collaborative problem-solving
Unmatched Reasoning,
Extreme Training Scale
Grok 4 is the latest generation of xAI’s large language models, built upon the same architecture as Grok 3 but trained with 10x more compute for reasoning tasks. The model features a 256,000-token context window and was trained with reinforcement learning that integrates native tool use. While multimodal capabilities are minimal in this release, Grok 4 dominates text-based benchmarks and is designed to scale with future toolchains.
Exceptional Reasoning
Grok 4 scores state-of-the-art on high-complexity tasks, including ARC-AGI-2 and AIME 2025, demonstrating strong abilities in mathematical reasoning and real-world logic.
Human-Level Problem Solving
Grok 4 sets a new bar on Humanity’s Last Exam, solving ~40% of 2,500 expert-level problems solo, and over 50% in multi-agent mode — outperforming all competitors by a wide margin.
Massive Context Window
With 256,000 tokens of context, Grok 4 enables long-horizon planning, legal analysis, and multi-document reasoning with minimal memory loss.
Deploy World-Class Reasoning Across Workflows
Level Up with xAI Intelligence
Software Engineering
Support for long-range context and accurate function generation allows Grok 4 to assist with multi-file edits and detailed code walkthroughs.
Legal & Compliance
Grok 4’s large context and deterministic instruction-following make it useful for document review, regulation comparison, and compliance workflows.
Scientific Research
Grok 4 can reason through complex data, generate hypotheses, and summarize research across thousands of tokens — making it ideal for technical domains.
Benchmark Dominance in Reasoning
Grok 4 surpasses competitors in mathematical and logic-heavy tasks, while offering longer context and deeper integration with tools.
Grok 4 vs GPT‑4o
GPT‑4o excels in multimodal performance, supporting vision, audio, and real-time browsing. However, on advanced reasoning tasks, Grok 4 sets new benchmarks: it scores 76.9% on AIME 2025, significantly above GPT‑4o’s known performance. Grok 4 also leads in ARC-AGI-2, achieving 15.9%.
Learn more about GPT-4o API.
Grok 4 vs Grok 3
Both models share the same architecture base, but Grok 4 benefits from 10× more compute on reasoning during RL. Grok 4 doubles the context window to 256K tokens, and introduces native tool use training during RL. In terms of output quality and technical depth, Grok 4 is a substantial upgrade.
Learn more about Grok 3.
Grok 4 vs Gemini 2.5 Pro
On Humanity’s Last Exam, Grok 4 achieves 25.4% without tools and up to 44.4% with tool use, compared to Gemini 2.5 Pro’s 21.6% (no tools). Even in its default setting, Grok 4 leads on multi-step reasoning and instruction-following accuracy.
Learn more about Gemini 2.5 Pro API.
Why Choose AI/ML API solution?
AI/ML API provides scalability, faster deployment, and access to 200+ advanced machine learning models without the need for extensive in-house expertise or infrastructure.
Easy To Use
Our API allows seamless integration of powerful AI capabilities into your applications, regardless of your coding experience. Simply swap your API key to begin using the AI/ML API.
Scalable
AI/ML API provides flexibility for business growth since you can scale resources by purchasing more tokens as needed, ensuring optimal performance and cost efficiency
Affordable
We offer flat, predictable pricing, payable by card or cryptocurrency, keeping it the lowest on the market and affordable for everyone.
Grok 4 API
Coming Soon
While we’re adding Grok 4, you can check out our other models and try them in AI Playground.