GLM-5.3 Flash: The Model That Was Hiding in Plain Sight
For six days, one of the most capable models on OpenCode and OpenRouter had no name. It was just called Ox Alpha. Then Z.ai revealed it: GLM-5.3 Flash, a 320B MoE model with a 1M token context, native multimodal input, MIT-licensed weights — and a price tag that makes you read it twice.