> My experience with Anthropic is that despite using Opus 4.6 and 4.7, most of the time the performance is matching low B parameter Qwen.

Is this just the next level of the "they're serving quantized models!" theory?

I'm sure some inference providers don't, but most intentionally obfuscate this data. They have the full trace logs- my impression is that they don't share them because it's their competitive advantage, and it's easier for a competitor to distil their model if they did.