I had Claude recreate their chart from that article with these releases overlayed onto it: https://static.simonwillison.net/static/2026/anthropic-merge...

>> My best guess is that the uptick in code changes corresponds to the availability of Mythos/Fable-class models inside of Anthropic.

Yeah. OpenAI basically said the same thing with regards to having Astra available to their team internally over the summer.