Llm Gateway Cost And Caching easy
Your gateway limits each tenant to 100 requests per minute, yet a few tenants dominate the monthly bill by sending very large documents and asking for long outputs. Which change best controls cost?
- A Lower the per-tenant request limit so heavy tenants send fewer calls per minute.
- B Cap the concurrent connections per tenant at the gateway's load balancer layer.
- C Add a semantic cache so repeated document summaries are served without a call.
- D Enforce quotas in tokens, with separate limits for input and output tokens.
Answer: D. Enforce quotas in tokens, with separate limits for input and output tokens.
**Cost scales with tokens, not requests**: one 50,000-token call can cost more than hundreds of short ones, so request-count limits leave the expensive traffic uncapped. Token quotas with separate input and output limits target the real cost driver, at the price of more complex metering. A lower request limit would only help if requests were roughly uniform in size.
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