Unless it's actually some internal Claude API which OpenAI were using with an OpenAI benchmarking tool, this sounds like a hyped-up way for Wired to phrase it.
Almost like: `Woah man, OpenAI HACKED Claude's own AI mainframe until Sonnet slammed down the firewall man!` ;D Seriously though, why phrase API use of Claude as "special developer access"?
I suppose that it's reasonable to disagree on what is reasonable for safety benchmarking, e.g: where you draw a line and say, "hey, that's stealing" vs "they were able to find safety weak spots in their model". I wonder what the best labs are like at efficiently hunting for weak areas!
Funnily enough I think Anthropic have banned a lot of people from their API, myself included - and all I did was see if it could read a letter I got, and they never responded to my query to sort it out! But what does it matter if people can just use OpenRouter?