You’re running OpenClaw on a Hostinger VPS with Docker and OpenRouter. Smart move. But here’s the thing: if you haven’t optimized your model routing and context usage, you’re probably paying 5-10x more than you should be. This guide will walk you through the exact steps to cut your API costs by 70-97% without sacrificing quality.
The good news? Most of this is configuration. No code changes, no complex workarounds. Just smarter routing, leaner prompts, and strategic use of caching.
Before you optimize, you need to understand what’s eating your budget. Here are the six hidden cost drivers in OpenClaw:
| Cost Driver | Impact | Why It Matters |
|---|---|---|
| Wrong default model | 40-70% of bill | Using Claude Opus for everything when MiniMax works fine |
| Constant heartbeats hitting paid models | 15-30% of bill | Heartbeats should route to cheapest models, not your daily driver |
| Bloated context windows | 20-50% of bill | 136K base token overhead (system prompt + tool schemas) × every request |
| No prompt caching | 10-40% of bill | Repeat queries get charged full price instead of 90% discount |
| Session bloat | 10-30% of bill | Long sessions accumulate context; resets save 40-60% per question |
| Inefficient tool usage | 5-20% of bill | Tools that return verbose output waste tokens |
The dirty secret: 136K tokens of base overhead is unavoidable — that’s your system prompt + tool schemas. You can’t eliminate it, but you can make it count by reducing per-request waste around it.
Simple OpenClaw Setup in 10 Minutes
Setup your Private VPS with Clawdbot in 10 minutes:
OpenClaw VPS Hosting | One-Click AI Assistant Setup
Optional: Use code MOE-LUEKER for a discount
Set Up OpenRouter: