anthropic already has the model after Mythos 5. it is internal, and you may never get to use it.
buried in Anthropicās 186-page risk report is āModel 2,ā an internal only system Anthropic says is a noticeable improvement on Mythos 5 in many ways.
on CoBench v2, Model 2 is dropped into a past version of Anthropic with old code, logs, internal messages and documents, then asked to diagnose 449 real training and infrastructure problems. it scored 62.8%. Mythos 5 scored 50.3%. Anthropic estimates roughly 85% would mean a model could fully substitute for its technical staff and could mean RSI.
Model 2 and Mythos 5 already run as persistent research agents. Claude now writes a large majority of code merged into production. the lab says AI has made its R&D significantly faster, though still by less than 2Ć.
anthropic.com/aug-2026-risk-ā¦
Anthropic currently has no plans to release Model 2.
this is how the public frontier falls behind the private one. Anthropicās researchers are already using one or more models ahead, using that model(s) to help build the next model.