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Engadget
SpaceXAI launches Grok 4.5, its first built with Cursor's help
SpaceXAI has officially launched Grok 4.5, a model developed with AI company Cursor, marking a significant advancement following its rebranding from xAI. This model is specifically designed to excel in coding, agentic tasks, and knowledge work, outperforming other leading models in engineering tasks. Trained using tens of thousands of NVIDIA GPUs on a diverse dataset, Grok 4.5 delivers results faster and at a more competitive price point compared to similar offerings in the market. One notable application of Grok 4.5 is its ability to create an interactive solar system simulation from a single prompt.
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Published 9 Jul 2026, 12:25 UTC2 min read
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Summary
TL;DR
- Grok 4.5 is SpaceXAI's first model trained in collaboration with Cursor.
- The model improves coding, agentic tasks, and engineering performance.
- It features faster response times and lower operational costs.
- Grok 4.5 is priced at $2 per million input tokens.
- European availability is anticipated in mid-July.
Interesting facts
- Grok 4.5 was trained on coding and scientific data using NVIDIA GB300 GPUs.
- It's now the default model for Grok Build and available on Cursor's platform.
- Potential investment or acquisition discussions exist between SpaceXAI and Cursor.