---
id: "andrej-karpathy-neural-networks-zero-to-hero"
title: "Neural Networks: Zero to Hero"
creator: "Andrej Karpathy"
creator_url: "https://karpathy.ai/zero-to-hero.html"
url: "https://karpathy.ai/zero-to-hero.html"
level: "intermediate"
level_max: "advanced"
category: "foundations"
subcategory: "courses-and-learning-paths"
region: "West"
license: "closed"
license_scope: "linked-resource"
models: ["any"]
source_date: null
date_added: "2026-10-18"
---

[Foundations](/foundations/index.md)

# Neural Networks: Zero to Hero

by [Andrej Karpathy](https://karpathy.ai/zero-to-hero.html)

[Read the original →](https://karpathy.ai/zero-to-hero.html)

Learn neural networks by implementing them in Python.

Karpathy builds up from derivatives and backpropagation to language modeling and transformers. The lessons teach the model internals along the way, but assume working Python and introductory mathematics.

Level: [Intermediate](/levels/index.md#intermediate) to Advanced
Models: any
Category: [Foundations](/foundations/index.md)
Tags: 
Source date: date not stated
Added: 2026-10-18
Last verified: 2026-10-18
Status: ok
Prerequisites: Assumes basic LLM familiarity or the ability to read examples and configure a workflow.
Subcategory: [courses and learning paths](/foundations/courses-and-learning-paths/index.md)
Region: West
Original language: en
Access: free
Resource reuse: closed: No general open-reuse grant established from the inspected page. Closed is the conservative index bucket, not a legal finding; the resource is publicly readable. [Facet definitions](/about/index.md#facets)

Summary in our own words. Rights remain with the original creator. [Credit and correction policy](/about/index.md#credit-policy).

[Plain-text Markdown copy](/foundations/courses-and-learning-paths/andrej-karpathy-neural-networks-zero-to-hero/index.md)