If you've been using Claude heavily through Nexus, you've probably hit the wall. Your usage spikes, Anthropic charges you overage fees, and suddenly a tool you rely on becomes an unpredictable expense. This isn't a bug — it's how the billing model is designed. And for power users, it's a trap. Let's talk about why the "extra usage" model hurts serious Claude users, what the real math looks like, and what a predictable alternative actually gives you. The Extra Usage Problem, Explained Claude's direct API billing works on tokens. You pay per input token and per output token. On the surface, that seems fair — you pay for what you use. But in practice, for anyone running Claude seriously, it creates three nasty problems: 1. Costs are invisible until they're not When you're deep in a workflow — agents running, OpenClaw sessions firing, Claude processing large documents — you're not counting tokens. Nobody is. You're working.…