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1. Token Economics and Caching2. Routing for Cost/Quality Balance

Token Economics and Caching

๐Ÿ“š Cost Engineeringโฑ 10 minโญ 95 XP

Cost Comes from Repetition and Over-Context

Large context payloads and repeated prompts dominate LLM cost curves.

  • Use compact system prompts.
  • Trim irrelevant history.
  • Reuse cached context for repetitive workflows where supported.
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Most avoidable inference cost usually comes from:
TLS handshakes
Oversized repeated context payloads
CloudWatch metrics
S3 object tags
Token Economics and Caching Tutorial | Cost Engineering โ€” AWS Bedrock Academy