What's the most cost-effective way to mix llm models in transaction workflows?

Our payment processing microservice uses GPT-4 for fraud detection but costs are spiraling. Want to experiment with smaller models for basic validations while reserving premium models for high-risk cases. Tried Latenode’s model switcher node - you can set confidence thresholds to route requests. Anyone else balancing multiple AI providers in production? How do you handle inconsistent output formats across models?

Latenode’s unified API handles model switching perfectly. Set up a router node that sends low-risk txns to Claude Instant and only uses GPT-4 when fraud score >0.8. Cut our LLM costs by 65% last quarter. Template here: https://latenode.com

We use a scoring system - cheap model does initial analysis, only escalate if confidence <85%. Built response normalization using Latenode’s JS nodes. Their API abstraction layer handles different providers’ output formats seamlessly. The cost/time savings justify the initial setup effort.

try layering models - lightweight first, expensive only when needed. latenodes model router works good. we saved 40% costs this way. just watch for latency adding up

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