Uploaded December 2025 | Updated September 2026, 18 minutes ago

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Day 9/42: What Is Fine-Tuning?

Yesterday, we compared base vs instruct models.

Today, we explain the key technique behind that shift.

Fine-tuning means training a model further on a *small, high-quality dataset*.

Not more knowledge.

Better behavior.

That’s how we get code assistants, legal copilots, and domain-specific chatbots.

Small tweaks.

Big practical impact.

Missed yesterday? Start there.

Tomorrow, we talk about something just as important as accuracy: alignment.

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

#FineTuning #LLM #AIExplained #short