Regardless of one's opinions about future AI usage, I'm not sure this metric says anything at all.

Would Anthropic themselves be paying this much if it was actually billed? It is not obvious.

Is Anthropic a good sample for AI use? Surely not, since they have special needs (dogfooding) and a vested interest in proving that AI usage is the future.

Can we compare their results pre and post AI usage? Close to definitionally impossible.

Are their employees good examples of AI-assisted engineers? Not really, as (one would hope) they're more well versed on the topic than an average eng.