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Grok 4.5 release and capabilities
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xAI released Grok 4.5, a new AI model that was benchmarked alongside GPT-5.5 and Claude on the same application-building tasks. The model demonstrated capability to generate complex interactive applications, including a procedurally generated 3D harbor town simulation spanning 6,000 years of evolution.
- Grok 4.5 released by xAI on 2026-07-08
- Benchmarked directly against GPT-5.5 and Claude on identical app-building tasks
- Successfully generated procedurally generated 3D simulation with user controls
- Added to Harbor Town Playable gallery for public comparison
- Capable of complex interactive application generation with historical simulation scope