anthropic (and openai) have very likely solved for RSI (or are very close to it)
have you noticed their newest models are not only smarter but smaller / cost less?
this is probably the result of distilling a much, much larger internal model.
openai has Spud / Bel. Anthropic has Mythos 2. that’s the way frontier labs can compete with open sources “cheaper” trade off. they’ll just withhold the best models and pace via distillation
(and honestly it makes sense)
Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family.
It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.