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AI Engineering from Scratch is a free open-source curriculum with 503 lessons across 20 phases. Build core AI algorithms from raw math using Python, TypeScript, Rust, and Julia. Ideal for developers seeking deep understanding and hands-on implementation of AI systems.

Official free learning platform by Anthropic offering self-paced courses on Claude, Claude Code, API usage, AI Fluency, Model Context Protocol, and more. Earn official certificates upon completion.