Jev + Kimi K3 cascade classifies 100 fraud emails at 96% accuracy for $0.07

nutlope · x · 2026-09-17

Developer nutlope shares a cascade inference pipeline for email fraud detection: the fast specialized model Jev classified 100 emails (50 legit, 50 fraudulent) in 1.42 seconds, exposing confidence scores. The 31 predictions below 95% confidence were routed to Kimi K3 as a fallback.

The combined pipeline hit 96/100 accuracy in 16 seconds for about $0.07 total — $0.068 from Kimi K3 on Together and just $0.003 from Jev. He argues this pattern — fast narrow model first, big LLM only for uncertain cases — could be a game changer for fraud detection and other realtime use cases.

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