GLM-5.3 reportedly beats Space Bunny Alpha on Newton’s cradle in a physics test

A user reports that GLM-5.3 beat Space Bunny Alpha on Newton’s cradle in a five-scene physics test by AIMLAPI, while neither model handled the harder tornado or water-drop scenes well. The September 24, 2026, post describes Space Bunny Alpha as a stealth model launched that day on OpenRouter/OpenCode. The user argues that adding visual detail cannot compensate for incorrect collision timing or momentum transfer.