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Home/Models & Labs
Models & Labs

SpaceXAI and Cursor release Grok 4.5 model

The Rundown AI·July 9, 2026·high confidence

Why it matters

  • →Grok 4.5 offers significant efficiency gains, making it a cost-effective alternative to existing models.
  • →The collaboration between SpaceXAI and Cursor highlights the potential for strategic partnerships in advancing AI capabilities.
  • →The model's performance in coding and knowledge tasks positions it as a strong competitor in the AI landscape.
SpaceXAI and Cursor release Grok 4.5 model
©The Rundown AI

SpaceXAI and Cursor have unveiled Grok 4.5, a new AI model developed jointly after SpaceXAI's $60 billion acquisition of Cursor. The model demonstrates strong performance in coding and knowledge tasks, with benchmarks comparable to leading models like Claude Opus 4.8 and GPT 5.5. Grok 4.5 operates at a speed of 80 tokens per second and claims a fourfold efficiency improvement over its competitors. With pricing set at $2/$6 per million input/output tokens, it undercuts many frontier models, making it a competitive option in the AI market.

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