The rumour is that it's trained on Opus, but who knows

Oh of course all deepseek and glm are. Multiple people have seen GLM self report that it is claude, which makes it super obvious.

I think the surprising thing is I expect flash to be a pure distillation and strictly worse quality but clearly it’s more nuanced than that.

Claude claims to be deepseek, under some circumstances:

https://www.reddit.com/r/DeepSeek/comments/1rd5jw7/claude_so...

Don't ask western llms in Chinese what model they are...