xAI launches Grok 4.5 AI model for legal, finance and software tasks

Elon Musk’s xAI (now operating as SpaceXAI) announced the release of Grok 4.5, an artificial‑intelligence model developed together with the code‑assistant startup Cursor. The model is trained on trillions of tokens from Cursor’s internal data, including software repositories and scientific literature, and uses reinforcement learning and a distributed‑agent system to handle complex problems.

Grok 4.5 is marketed for professional use in legal, financial and software‑development domains, promising higher performance, faster response times and lower operating costs than competing models. It is already available to users in the United States, with a rollout planned for European Union markets by the end of the month. The launch is seen as a move by Musk’s firm to compete more directly with OpenAI, Anthropic and other leading AI providers.

Industry analysts note that the partnership with Cursor gives xAI access to large‑scale code‑base data, while the emphasis on efficiency and pricing targets enterprise customers seeking cost‑effective AI solutions.