Both claim to cut your Claude bill. They solve different problems. Here's how to pick.
Run the free audit at aiusage.ai →| Dimension | AIUsage | RelayPlane |
|---|---|---|
| Pitch | Stop overpaying for Claude — 70-90% on same prompts | Open source cost intelligence proxy for AI agents — cut costs ~80% with smart model routing |
| Savings claim | 70-90% (6 verified cases: 76-84%) | ~80% |
| Workload coverage | Any Claude API workload — support, agents, code review, content, CRM codegen | Multi-provider agent workloads |
| Setup | One-line code change (swap API endpoint) | MIT-licensed self-host proxy |
| Free audit | Yes — paste bill, see number, no signup | Typically no |
| Mechanism disclosure | Private — "try it, the number is testable" | Publicly documented smart model routing across 11 providers |
| Scope | Broad (workload-agnostic) | cost-intelligence + routing |
If your Claude usage is multi-provider agent workloads and you're comfortable with mit-licensed self-host proxy, RelayPlane is purpose-built for that shape. 156 GitHub stars if that matters to you.
If your Claude spend spans multiple workload types (support automation, agent loops, code review, content drafting, daily coding) or you want to audit your bill before you commit to any cost-reduction tool, AIUsage gives you the number first. No CLI install, no platform dependency, no code rewrite.
RelayPlane routes across 11 providers and publishes its routing algorithm. AIUsage is Claude-focused and mechanism-opaque — pick based on whether you want multi-provider transparency or Claude-specific audit.
Across six audited workloads, AIUsage's measured delta was 76-84% on the same prompts, blind A/B tested: