Elon Musk-led SpaceXAI has launched Grok 4.5, its latest artificial intelligence (AI) model, which the company describes as its most capable model yet. Designed for coding, AI agents and knowledge-based tasks, Grok 4.5 was developed alongside coding platform Cursor and is targeted at software developers, researchers and enterprise users.
How was Grok 4.5 trained?
According to SpaceXAI, Grok 4.5 was trained on datasets covering coding, science, engineering and mathematics. The model was built using tens of thousands of NVIDIA GB300 GPUs and employs advanced training techniques to improve stability during large-scale AI model training.
The company said it focused on improving data quality through filtering, de-duplication and domain-specific data selection. It also scaled reinforcement learning across hundreds of thousands of software engineering and technical tasks, enabling the model to perform better on complex, multi-step reasoning and coding challenges.
What can Grok 4.5 do?
According to the company, Grok 4.5 can handle complex programming tasks, including Rust and C/C++ development, and can build complete applications from a single text prompt. SpaceXAI claims the model can generate fully functional applications with minimal user input.
Beyond software development, Grok 4.5 has been integrated into Grok Build, where it can create advanced Excel spreadsheets involving web research, multi-sheet formulas and automated notes. It can also generate PowerPoint presentations using native slide elements to build diagrams and layouts, and draft documents in Microsoft Word.
Performance
SpaceXAI said Grok 4.5 can generate responses at speeds of up to 80 tokens per second (TPS). The company also claims the model is about twice as token-efficient as comparable leading AI models, allowing it to complete tasks in fewer reasoning steps while reducing latency and computing costs.
Pricing
Grok 4.5 is priced at $2 per million input tokens and $6 per million output tokens. According to SpaceXAI, its higher token efficiency enables users to complete tasks faster and at a lower overall cost than comparable AI models.
Availability
Grok 4.5 is available through Grok Build, Cursor across all subscription plans and the SpaceXAI developer console. Developers can access the model by generating an API key and integrating it into their applications.
