I tested it, and it looks real but more nuanced. It is just for subagents; workflows do not seem affected. I guess many new users prefer workflows (ultracode), so the impact is less than the report suggested.
Moreover it is mostly cached reads, so subagents with short context cost little, while long-context ones cost much more.
In my Claude Code sessions, it looks more like ~8% at most.
Moreover it is mostly cached reads, so subagents with short context cost little, while long-context ones cost much more.
In my Claude Code sessions, it looks more like ~8% at most.