Uploaded February 2026 | Updated September 2026, 18 minutes ago

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Day 42/42: Making AI Reliable

Day 42/42.
If you made it this far, you’re no longer just a user.

LLMs fail because of limits:
hallucinations,
reasoning gaps,
bias,
cutoffs.

They become reliable through design:
grounding,
retrieval,
tools,
alignment,
evaluation.

No single trick fixes everything.
Layering does.

That’s the difference between demos and systems.

If you missed earlier days, start at Day 1.
This was the full mental model.

I’m Louis-François, PhD dropout, now CTO & co-founder at Towards AI. Follow me for what’s next 🚀

#LLM #AIExplained #AIEngineering #short