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How do you optimize LLM inference cost?

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Answer

  • (1) Choose right model tier: smaller model (Haiku, Mini) for easy tasks, only escalate hard.
  • (2) Prompt caching (Anthropic / OpenAI): 30-90% off shared prefixes.
  • (3) Batching where latency-tolerant.
  • (4) Distill to smaller model for specific tasks.
  • (5) Quantize (int4 / FP8) self-hosted.
  • (6) Truncate context to essential.
  • (7) Cache responses for deterministic queries.
  • (8) Use open-source (Llama, Mistral) for privacy + cost.
  • (9) Fine-tune smaller open-source to beat closed on your task.
  • Monitor $/query.
Check yourself — multiple choice
  • Just cheaper
  • Right tier (small first, escalate) + prompt cache (30-90% off) + batching + distill + quant + truncate + response cache + open-source + fine-tune small; monitor $/query
  • Random
  • Not real

LLM cost: tier + cache + batch + distill + quant + truncate + OSS + fine-tune.

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