Quasar Alpha (stealth)
Cloaked 1M-context model on OpenRouter, free to test; revealed as an early test of GPT-4.1.
This is a cloaked model provided to the community to gather feedback. 1,000,000 token context window.
Source
Quasar Alphaopenrouter.ai · published
Revealed as
There’s a Mini and a Nano version as well, but Quasar and Optimus were tests of the large one (4.1).