Next-Generation Intelligence from xAI

We are pleased to introduce Grok 3, our most advanced model yet: blending strong reasoning with extensive pretraining knowledge. Trained on our Colossus supercluster with 10x the compute of previous state-of-the-art models, Grok 3 displays significant improvements in reasoning, mathematics, coding, world knowledge, and instruction-following tasks. Grok 3's reasoning capabilities, refined through large scale reinforcement learning, allow it to think for seconds to minutes, correcting errors, exploring alternatives, and delivering accurate answers. Grok 3 has leading performance across both academic benchmarks and real-world user preferences, achieving an Elo score of 1402 in the Chatbot Arena. Alongside it, we’re unveiling Grok 3 mini, which represents a new frontier in cost-efficient reasoning. Both models are still in training and will evolve rapidly with your feedback. We are rolling out Grok 3 to users in the coming days, along with an early preview of its reasoning capabilities.

Thinking Harder: Test-time Compute and Reasoning

Today, we are announcing two beta reasoning models, Grok 3 (Think) and Grok 3 mini (Think). They were trained using reinforcement learning (RL) at an unprecedented scale to refine its chain-of-thought process, enabling advanced reasoning in a data-efficient manner. With RL, Grok 3 (Think) learned to refine its problem-solving strategies, correct errors through backtracking, simplify steps, and utilize the knowledge it picked up during pretraining. Just like a human when tackling a complex problem, Grok 3 (Think) can spend anywhere from a few seconds to several minutes reasoning, often considering multiple approaches, verifying its own solution, and evaluating how to precisely meet the requirements of the problem.