AI
RLHF Explained Simply
•January 1, 2026
Original Description
Day 11/42: What Is RLHF?
Yesterday, we talked about alignment.
But how do we actually teach a model what humans prefer?
That’s where RLHF comes in: Reinforcement Learning from Human Feedback.
Instead of just predicting text, the model generates multiple answers.
Humans rank them from best to worst.
The model then learns to favor the kinds of responses people like:
clear, helpful, polite, and safe.
RLHF doesn’t make models smarter.
It makes them nicer to use.
Missed Day 10? Start there.
Tomorrow, we look at how instructions are actually sent to a model: prompts.
I’m Louis-François, PhD dropout, now CTO & co-founder at Towards AI. Follow me for tomorrow’s no-BS AI roundup 🚀
#RLHF #AIAlignment #LLM #short
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