Cut my client's AI automation costs by 73% - here's the exact setup
Client was running 500+ conversations/day through their AI agent. Burning $450/month on GPT-4.
The fix I built in n8n:
Added a smart routing system:
  1. DeepSeek R1 classifies query complexity (costs almost nothing)
  2. IF complexity_score > 7 → GPT-4
  3. ELSE → GPT-4o-mini
What happened:
  • 60% of queries went to GPT-4o-mini (way cheaper)
  • Only complex stuff hit GPT-4
  • Same quality, zero user complaints
  • New cost: $120/month
ROI: Took 2 hours to build, saves $330/month = $3,960/year
The key insight: Most queries don't need GPT-4's full power. Route smart, save money.
Anyone else optimizing API costs? What strategies are working for you?
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Mehroz Muneer
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Cut my client's AI automation costs by 73% - here's the exact setup
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