What is Quasar Alpha AI?

Quasar Alpha is a mysterious new AI model that appeared on OpenRouter on April 4, 2025. Unlike the flashy launches we've grown accustomed to in the AI space, this "stealth" model arrived quietly without press releases or social media campaigns. According to OpenRouter's announcement, Quasar Alpha represents a pre-release version of an upcoming long-context foundation model from one of their partner labs.