Uploaded January 2026 | Updated September 2026, 2 hours ago

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Day 29/42: What Are Metrics?

Yesterday, we talked benchmarks.
Today, we talk reality.

Metrics measure how a system performs in your use case.

Faithfulness.
Relevance.
Latency.
Cost.

Benchmarks ask: “Is the model good?”
Metrics ask: “Is your system good?”

This distinction separates demos from products.

Missed Day 28? Important one.
Tomorrow, we automate evaluation with LLM-as-judge.

I’m Louis-François, PhD dropout, now CTO & co-founder at Towards AI. Follow me for tomorrow’s no-BS AI roundup 🚀

#Metrics #LLM #AIExplained #short