ANTHROPIC : Claude Opus 5.5 is reportedly routed to a different model with much better performance. 

Claude Fable 5.5 is a potential candidate for the model behind the scenes, but it remains unknown. 

As a side note, Anthropic is hosting a Founder House event in Stockholm this week. Typically, these events aren't used for product announcements but may overlap with showcases of frontier capabilities. 

The best is yet to come