# LiteLLM Virtual Keys: Production-Grade Multi-Tenant Cost Attribution Infrastructure

> Source: https://sukruyusufkaya.com/en/learn/token-ekonomisi/litellm-virtual-keys-multi-tenant-cost
> Updated: 2026-05-14T14:44:12.379Z
> Category: Token Ekonomisi & LLM Cost Optimization
> Module: Module 4: Cost Attribution
**TLDR:** Creating virtual keys in LiteLLM Proxy, per-key budgets, rate limits, model whitelists, and the full admin API. Each tenant gets their own key = automatic attribution + automatic control.