xAI has officially launched Grok 4.5, its flagship AI model built specifically for software engineering, agentic automation, and high-level knowledge work. Trained alongside Cursor on tens of thousands of NVIDIA GB300 GPUs, the model combines advanced reasoning with remarkable token efficiency, outputting 80 tokens per second while requiring up to 4.2x fewer tokens than top competitors to solve complex development tasks.
Beyond end-to-end coding in Rust and C++, Grok 4.5 seamlessly handles office productivity—building multi-sheet financial models in Excel, creating native PowerPoint diagrams, and drafting documents in Word.
Grok 4.5 is available now through the xAI API at $2.00 / M input tokens and $6.00 / M output tokens, as well as in Cursor and Grok Build, where users can try it for free for a limited time.
Source: grok-4-5