xAI releases Grok 3

xAI/Grok

xAI released Grok 3, trained on the Colossus cluster with ten times the compute of earlier leading models. It features a 'Think' mode for extended reasoning lasting seconds to minutes and a 1-million-token context window. xAI also launched DeepSearch, an agent combining reasoning with web search and code interpretation; access rolled out to X Premium+ users first.

• Trained on Colossus with 10x compute of prior leading models
• Think mode reasoning variants (Grok 3 Think, Grok 3 mini Think) for seconds to minutes of reasoning
• 1-million-token context window (8x prior versions); 93.3% on 2025 AIME, 84.6% on expert reasoning tasks
• DeepSearch agent combines reasoning, web search, code execution; reasons about conflicting facts; available first to X Premium+ users