I’m pretty sure the parent comment is referring to capacity constraints. When the Americans come online in the morning, Claude frequently can’t keep up with demand and error messages saying the system is at capacity are common.
I used Openrouter for Claude and Deepseek which chooses between alternative hosts for a given model. I excluded Deepseek provider as its underperforming.
I've noticed it too. When it started the overcapacity messages went away. I think they are switching to models with fewer parameters during oversubscribed hours.