Releases

xAI launched the autoregressive Aurora image-generation model on X, adding photorealistic generation and multimodal image input.

xAI opened public API access to Grok foundation models with OpenAI- and Anthropic-compatible interfaces.

xAI brought its Memphis Colossus training cluster online with 100,000 NVIDIA H100 GPUs after a 122-day build.

xAI released Grok-2 and Grok-2 mini in beta on X and announced enterprise API availability.

xAI raised $6 billion from investors including Valor Equity Partners, Vy Capital, Andreessen Horowitz, Sequoia Capital and Fidelity; Reuters reported a $24 billion post-money valuation.

Grok-1.5 rolled out to Grok users on X.

xAI previewed its first multimodal model, adding understanding of documents, diagrams, charts, screenshots and photographs.

xAI announced Grok-1.5 with improved reasoning and a 128,000-token context window.

xAI released the 314B-parameter Grok-1 base weights and Mixture-of-Experts architecture under Apache 2.0.

Grok became available to users through the X platform.

xAI began early API access for Grok developers ahead of the later public beta.

xAI launched PromptIDE for prompt engineering and interpretability research on Grok-1.

xAI announced Grok and its first public model after two months of training, with real-time knowledge through X.

xAI completed Grok-0, a 33-billion-parameter research prototype that preceded the first public Grok model.

Elon Musk and the founding team publicly announced xAI with a mission to understand the true nature of the universe.