On February 17, 2025, xAI officially presented Grok-3, its flagship artificial intelligence model designed to lead the frontier of computational reasoning, advanced mathematics and code generation.
Computing power on the Colossus cluster
Trained on the supercomputer Colossus—the massive Nvidia H100 and H200 cluster infrastructure powered by Elon Musk—with more than ten times the computational capacity of its predecessors, Grok-3 represents a quantitative leap on the xAI scale.
Thanks to a training framework based on large-scale reinforcement learning (RL) and iterative self-correction, the model not only predicts responses, but reflects on intermediate hypotheses, detects logical contradictions and explores alternative solutions in real time.
Results and Benchmarks on the AI Frontier
In standardized industry assessments, Grok-3 has been shown to outperform or directly rival leading models on the market, such as OpenAI’s GPT-4o and the DeepSeek family (V3 and R1):
Chatbot Arena Elo
1402
Global score consolidating first place in blind user preferences.
AIME 2025
52.2%
Applied mathematics competition above the reference standard.
GPQA
75.4%
Postgraduate scientific reasoning assessment with highly complex questions.
Advanced Reasoning Modes: Think and Big Brain
One of the great functional innovations of Grok-3 is the incorporation of dynamic operating modes adapted to the difficulty of the problem:
- Think Mode: Deploys explicit chains of thought (Chain-of-Thought) step by step, allowing the user to audit the AI’s logical deductions.
- Big Brain Mode: Allocates greater computational volume in inference for extraordinarily intricate problems in algorithms, theoretical physics, and software architecture.
- Integration with DeepSearch: Real-time web navigation and synthesis system that filters primary sources and updated documentation instantly.
Availability and Model Ecosystem
Grok-3 is available on the
For those workflows that require lower latency and high concurrency with contained costs, xAI accompanies this launch with its optimized version Grok-3 Mini. You can consult the global comparison of the entire family of models and rates in our complete guide to Grok models and prices.
This post is also available in: