Grok 4: xAI succeeds in going from 0 to new SOTA LLM in 2 years

**xAI** launched **Grok 4** and **Grok 4 Heavy**, large language models rumored to have **2.4 trillion parameters** and trained with **100x more compute** than Grok 2 on **100k H100 GPUs**. Grok 4 achieved new state-of-the-art results on benchmarks like **ARC-AGI-2 (15.9%)**, **HLE (50.7%)**, and **Vending-Bench**, outperforming models such as **Claude 4 Opus**. The model supports a **256K context window** and is priced at **$3.00/M input tokens** and **$15.00/M output tokens**. It is integrated into platforms like **Cursor**, **Cline**, **LangChain**, and **Perplexity Pro/Max**. The launch was accompanied by a controversial voice mode and sparked industry discussion about xAI's rapid development pace, with endorsements from figures like **Elon Musk** and **Arav Srinivas**.