I’m surprised! The Opus 4.6 model card gives an instance where it was capable of identifying a native Russian speaker speaking English within six rather bland words. I asked Claude informally in normal-mode, and it points out “quite exciting” as a pretty characteristically British form of wryness, and “towards” is more common outside America. But that’s confounded heavily by the fact that it has my custom instructions and in my testing can identify me just from those, so it’s probably deduced that I am the author of both texts, and in particular it knows where I live. Gemini also identifies the text as British English (citing “towards” and the general slightly-self-deprecating wry undercurrent), and I’ve never customised that, though obviously it has the metadata that I’m in the Netherlands (from my VPN).
When I tell my Claude that it’s British it gets it one shot. It doesn’t pick up on that otherwise.
I’m surprised! The Opus 4.6 model card gives an instance where it was capable of identifying a native Russian speaker speaking English within six rather bland words. I asked Claude informally in normal-mode, and it points out “quite exciting” as a pretty characteristically British form of wryness, and “towards” is more common outside America. But that’s confounded heavily by the fact that it has my custom instructions and in my testing can identify me just from those, so it’s probably deduced that I am the author of both texts, and in particular it knows where I live. Gemini also identifies the text as British English (citing “towards” and the general slightly-self-deprecating wry undercurrent), and I’ve never customised that, though obviously it has the metadata that I’m in the Netherlands (from my VPN).