GPT 5.1
GPT 5.1 Public Beta in Disguise, Free to Use, Joins Year-End Update Battle
Gemini 3 Still Missing, GPT 5.1 Already on the Way On November 7th, the OpenRouter platform quietly launched a new, hidden model. Sharp-eyed and quick-acting users believe this is actually GPT 5.1 in disguise — for now nicknamed Polaris Alpha. Model Overview * Access: API (including via OpenRouter) * Knowledge cutoff: