A Reddit user in the r/LocalLLaMA community shared a thought experiment asking which date within the next 1000 years would cause two planets to collide if the Sun and its gravity suddenly disappeared.
The prompt asks users to test their preferred local language models against this physics-based scenario. The original post also notes that ChatGPT 5.5 provided a specific answer of April 15, 2363, at approximately 17:17.
This serves as an informal benchmark for evaluating the reasoning capabilities of locally hosted AI models compared to larger commercial alternatives.